diff --git a/lib/far_mar.rb b/lib/far_mar.rb
index db54a95a..659b93f4 100644
--- a/lib/far_mar.rb
+++ b/lib/far_mar.rb
@@ -1,3 +1,4 @@
+require 'pry'
 require 'csv'
 require 'time'
 require './lib/far_mar/market'
diff --git a/lib/far_mar/market.rb b/lib/far_mar/market.rb
index 5be343e9..89ff4892 100644
--- a/lib/far_mar/market.rb
+++ b/lib/far_mar/market.rb
@@ -1,4 +1,84 @@
+
 module FarMar
   class Market
+
+    attr_reader :market_id, :name, :address, :city, :county, :state, :zip
+
+    def initialize(market_id, name, address, city, county, state, zip)
+      @market_id = market_id
+      @name = name
+      @address = address
+      @city = city
+      @county = county
+      @state = state
+      @zip = zip
+    end
+
+    def self.all
+      @@market_instances ||= []
+      if @@market_instances == []
+        markets_csv = CSV.read("./support/markets.csv")
+        markets_csv.each do |row|
+          @@market_instances.push(Market.new(row[0].to_i, row[1], row[2], row[3], row[4], row[5], row[6]))
+        end
+      end
+      return @@market_instances
+    end
+    def self.find(id)
+        self.all.find do |market|
+        market.market_id == id
+      end
+    end
+    def vendors
+      market_vendor_array = []
+      vendor_array = FarMar::Vendor.all
+      vendor_array.each do |vendor|
+        if vendor.market_id == @market_id
+          market_vendor_array.push(vendor)
+        end
+      end
+      return market_vendor_array
+    end
+    def products
+      market_products = []
+      vendor_array = self.vendors
+      vendor_array.each do |vendor|
+        market_products += vendor.products
+      end
+      return market_products
+    end
+    def self.search(search_term)
+      search_term = search_term.downcase
+      name_array = []
+      name_search = FarMar::Market.all.map do |market|
+        {market.name.downcase => market}
+      end
+      name_search2 = FarMar::Vendor.all.map do |vendor|
+        {vendor.name.downcase => FarMar::Market.find(vendor.market_id)}
+      end
+      (name_search + name_search2).each do |hash|
+        if hash.keys[0].include?(search_term)
+          name_array += hash.values
+        end
+      end
+      return name_array.uniq
+    end
+
+    def preferred_vendor(date = nil)
+      market_vendors = self.vendors
+        top_vendor = market_vendors.max_by do |vendor|
+          vendor.revenue(date)
+        end
+        return top_vendor
+    end
+
+    def worst_vendor(date = nil)
+      market_vendors = self.vendors
+        last_vendor = market_vendors.min_by do |vendor|
+          vendor.revenue(date)
+        end
+        return last_vendor
+    end
+
   end
 end
diff --git a/lib/far_mar/product.rb b/lib/far_mar/product.rb
index 67d6716d..d3a2692a 100644
--- a/lib/far_mar/product.rb
+++ b/lib/far_mar/product.rb
@@ -1,4 +1,59 @@
 module FarMar
   class Product
+
+    attr_reader :product_id, :name, :vendor_id
+
+    def initialize(product_id, name, vendor_id)
+      @product_id = product_id
+      @name = name
+      @vendor_id = vendor_id
+    end
+
+
+    def self.all
+      @@product_instances ||= [] #@@product = @@product || []
+      if @@product_instances == []
+        products_csv = CSV.read("./support/products.csv")
+        products_csv.each do |row|
+          @@product_instances.push(Product.new(row[0].to_i, row[1], row[2].to_i))
+        end
+      end
+      return @@product_instances
+    end
+    def self.find(id)
+        self.all.find do |product|
+        product.product_id == id
+      end
+    end
+
+    def vendor
+      product_vendor_array = FarMar::Vendor.all
+      product_vendor_array.each do |row|
+        if row.vendor_id == @vendor_id
+          return row
+        end
+      end
+    end
+
+    def sales
+      product_sales_array = []
+      sale_array = FarMar::Sale.all
+      sale_array.each do |sale|
+        if sale.product_id == @product_id
+          product_sales_array.push(sale)
+        end
+      end
+      return product_sales_array
+    end
+
+    def number_of_sales
+      return sales.length
+    end
+
+    def self.by_vendor(vendor_id)
+      vendor = FarMar::Vendor.find(vendor_id)
+      return vendor.products
+    end
+
   end
 end
diff --git a/lib/far_mar/sale.rb b/lib/far_mar/sale.rb
index 10e3780e..d26c7ee2 100644
--- a/lib/far_mar/sale.rb
+++ b/lib/far_mar/sale.rb
@@ -1,4 +1,57 @@
 module FarMar
   class Sale
+
+    attr_reader :sale_id, :amount, :purchase_time, :vendor_id, :product_id
+
+    def initialize(sale_id, amount, purchase_time, vendor_id, product_id)
+      @sale_id = sale_id
+      @amount = amount
+      @purchase_time = DateTime.strptime(purchase_time, "%Y-%m-%d %H:%M:%S %z")
+      @vendor_id = vendor_id
+      @product_id = product_id
+    end
+
+
+    def self.all
+      @@sale_instances ||= []
+      if @@sale_instances == []
+        sales_csv = CSV.read("./support/sales.csv")
+        sales_csv.each do |row|
+          @@sale_instances.push(Sale.new(row[0].to_i, row[1].to_i, row[2], row[3].to_i, row[4].to_i))
+        end
+      end
+      return @@sale_instances
+    end
+    def self.find(id)
+        self.all.find do |sale|
+        sale.sale_id == id
+      end
+    end
+
+    def vendor
+      sale_vendor_array = FarMar::Vendor.all
+      sale_vendor_array.each do |row|
+        if row.vendor_id == @vendor_id
+          return row
+        end
+      end
+    end
+
+    def product
+      sale_product_array = FarMar::Product.all
+      sale_product_array.each do |row|
+        if row.product_id == @product_id
+          return row
+        end
+      end
+    end
+
+    def self.between(beginning_time, end_time)
+      sales_by_time = []
+      FarMar::Sale.all.find_all do |sale_object|
+        sale_object.purchase_time >= beginning_time && sale_object.purchase_time <= end_time
+        sales_by_time.push(sale_object)
+      end
+    end
   end
 end
diff --git a/lib/far_mar/vendor.rb b/lib/far_mar/vendor.rb
index 43c213b6..09dab969 100644
--- a/lib/far_mar/vendor.rb
+++ b/lib/far_mar/vendor.rb
@@ -1,4 +1,76 @@
 module FarMar
   class Vendor
+
+    attr_reader :vendor_id, :name, :employees, :market_id
+
+    def initialize(vendor_id, name, employees, market_id)
+      @vendor_id = vendor_id
+      @name = name
+      @employees = employees
+      @market_id = market_id
+    end
+
+    def self.all
+      @@vendor_instances ||= []
+      if @@vendor_instances == []
+        vendor_csv = CSV.read("./support/vendors.csv")
+        vendor_csv.each do |row|
+          @@vendor_instances.push(Vendor.new(row[0].to_i, row[1], row[2], row[3].to_i))
+        end
+      end
+      return @@vendor_instances
+    end
+    def self.find(id)
+        self.all.find do |vendor|
+        vendor.vendor_id == id
+      end
+    end
+
+    def market
+      vendor_market_array = FarMar::Market.all
+      vendor_market_array.each do |row|
+        if row.market_id == @market_id
+          return row
+        end
+      end
+    end
+
+    def products
+      vendor_products_array = []
+      product_array = FarMar::Product.all
+      product_array.each do |product|
+        if product.vendor_id == @vendor_id
+          vendor_products_array.push(product)
+        end
+      end
+      return vendor_products_array
+    end
+
+    def sales
+      vendor_sales_array = []
+      sale_array = FarMar::Sale.all
+      sale_array.each do |sale|
+        if sale.vendor_id == @vendor_id
+          vendor_sales_array.push(sale)
+        end
+      end
+      return vendor_sales_array
+    end
+
+    def revenue(date = nil)
+      date = DateTime.strptime(date, "%Y-%m-%d") if date != nil
+      total_revenue = 0
+      sales.each do |sale|
+        if sale.purchase_time.to_date == date || date == nil
+        total_revenue += sale.amount
+        end
+      end
+      return total_revenue
+    end
+
+    def self.by_market(market_id)
+      market = FarMar::Market.find(market_id)
+      return market.vendors
+    end
   end
 end
diff --git a/spec/far_mar/market_spec.rb b/spec/far_mar/market_spec.rb
index 092c46ca..26213cc0 100644
--- a/spec/far_mar/market_spec.rb
+++ b/spec/far_mar/market_spec.rb
@@ -2,11 +2,88 @@
 
 describe FarMar::Market do
   before :each do
-    @market = FarMar::Market.new
+    @market = FarMar::Market.new(1, "Meighan's Ranch", "1234 N St", "Seattle", "WA", "King", "98103")
+    @market_1 = FarMar::Market.new(1,"People's Co-op Farmers Market","30th and Burnside","Portland","Multnomah","Oregon","97202")
   end
   describe "#initialize" do
     it "creates a new instance" do
       expect(@market).to be_an_instance_of FarMar::Market
     end
   end
+
+  describe "self.all" do
+    it "creates an array of markets" do
+      expect(FarMar::Market.all).to be_an Array
+    end
+  end
+
+  describe "self.find" do
+    it "returns market instance where the value of the id the passed parameter" do
+      result = FarMar::Market.find(3)
+      expect(result).to be_an Object
+      expect(result.market_id).to eq 3
+    end
+  end
+
+  describe "vendors" do
+    it "returns a collection of vendor instances that are associated with market_id" do
+      market_vendor_array = @market.vendors
+      expect(market_vendor_array).to be_an Array
+      expect(market_vendor_array.length).to eq 6
+    end
+  end
+
+  describe "products" do
+    it "returns a collection of product instances via the Vendor class" do
+      market_product_array = @market.products
+      expect(market_product_array).to be_an Array
+      expect(market_product_array[0]).to be_an_instance_of FarMar::Product
+    end
+  end
+
+  describe "self.search(search_term)" do
+    describe "does the search part of the method" do
+      it "searches market names" do
+        expect(FarMar::Market.find(4).name).to be_a String
+        expect(FarMar::Market.find(4).name).to include("Preston")
+      end
+      it "searches vendor names" do
+        expect(FarMar::Vendor.find(2).name).to be_a String
+        expect(FarMar::Vendor.find(2).name).to include("Hamill")
+      end
+    end
+    describe "creates a collection of market instances that contain search_term" do
+      it "creates a collection of markets from market name search" do
+        expect(FarMar::Market.search("People").length).to eq 2
+        expect(FarMar::Market.search("People")[0].market_id).to eq 1
+      end
+      it "creates a collection of markets from vendor name search" do
+        expect(FarMar::Market.search("Donnelly").length).to eq 17
+        expect(FarMar::Market.search("donnelly")[0].market_id).to eq 3
+      end
+    end
+
+    describe "preferred_vendor" do
+      it "returns the vendor with the highest revenue" do
+        expect(@market_1.preferred_vendor).to be_an_instance_of FarMar::Vendor
+        expect(@market_1.preferred_vendor.vendor_id).to eq 5
+        expect(@market_1.preferred_vendor.revenue).to eq 61749
+      end
+    end
+
+    describe "preferred_vendor(date)" do
+      it "returns the vendor with the highest revenue for the given date" do
+        @date = DateTime.strptime("2013-11-07", "%Y-%m-%d")
+        expect(@market_1.preferred_vendor("2013-11-07")).to be_an_instance_of FarMar::Vendor
+      end
+    end
+
+    describe "worst_vendor" do
+      it "returns the vendor with the lowest revenue" do
+        expect(@market_1.worst_vendor).to be_an_instance_of FarMar::Vendor
+        expect(@market_1.worst_vendor.vendor_id).to eq 6
+        expect(@market_1.worst_vendor.revenue).to eq 2977
+      end
+    end
+  end
 end
diff --git a/spec/far_mar/product_spec.rb b/spec/far_mar/product_spec.rb
index cf4bbf1e..6edc9be9 100644
--- a/spec/far_mar/product_spec.rb
+++ b/spec/far_mar/product_spec.rb
@@ -2,11 +2,57 @@
 
 describe FarMar::Product do
   before :each do
-    @product = FarMar::Product.new
+    @product = FarMar::Product.new(5, "apple", 2)
   end
   describe "#initialize" do
     it "creates a new instance" do
       expect(@product).to be_an_instance_of FarMar::Product
     end
   end
+
+  describe "self.all" do
+    it "creates an array of products" do
+      expect(FarMar::Product.all).to be_an Array
+    end
+  end
+
+  describe "self.find" do
+    it "returns product instance where the value of the id the passed parameter" do
+      result = FarMar::Product.find(3)
+      expect(result).to be_an Object
+      expect(result.product_id).to eq 3
+    end
+  end
+
+  describe "vendor" do
+    it "returns the vendor instance that is associated with the product" do
+      product_vendor = @product.vendor
+      expect(product_vendor).to be_an Object
+      expect(product_vendor.vendor_id).to eq 2
+    end
+  end
+
+  describe "sales" do
+    it "returns a collection of sale instances that are associated with product_id" do
+      product_sale_array = @product.sales
+      expect(product_sale_array).to be_an Array
+      expect(product_sale_array.length).to eq 2
+    end
+  end
+
+  describe "number_of_sales" do
+    it "returns the number of times a product has been sold" do
+      total_times_sold = @product.number_of_sales
+      expect(total_times_sold).to eq 2
+    end
+  end
+
+  describe "self.by_vendor(vendor_id)" do
+    it "returns all of the products with the given vendor_id" do
+      products_by_vendor = FarMar::Product.by_vendor(2)
+      expect(products_by_vendor).to be_an Array
+      expect(products_by_vendor.length).to eq 2
+      expect(products_by_vendor[0].product_id).to eq 2
+    end
+  end
 end
diff --git a/spec/far_mar/sale_spec.rb b/spec/far_mar/sale_spec.rb
index 38d647a2..5fa063db 100644
--- a/spec/far_mar/sale_spec.rb
+++ b/spec/far_mar/sale_spec.rb
@@ -2,11 +2,56 @@
 
 describe FarMar::Sale do
   before :each do
-    @sale = FarMar::Sale.new
+    @sale = FarMar::Sale.new(10, "150", "2013-11-07 04:34:56 -0800", 2, 4)
   end
   describe "#initialize" do
     it "creates a new instance" do
       expect(@sale).to be_an_instance_of FarMar::Sale
     end
   end
+
+  describe "self.all" do
+    it "creates an array of sales" do
+      expect(FarMar::Sale.all).to be_an Array
+    end
+  end
+
+  describe "self.find" do
+    it "returns sale instance where the value of the id the passed parameter" do
+      result = FarMar::Sale.find(3)
+      expect(result).to be_an Object
+      expect(result.sale_id).to eq 3
+    end
+  end
+
+  describe "vendor" do
+    it "returns the vendor instance that is associated with the sale" do
+      sale_vendor = @sale.vendor
+      expect(sale_vendor).to be_an Object
+      expect(sale_vendor.vendor_id).to eq 2
+    end
+  end
+
+  describe "product" do
+    it "returns the product instance that is associated with the sale" do
+      sale_product = @sale.product
+      expect(sale_product).to be_an Object
+      expect(sale_product.product_id).to eq 4
+    end
+  end
+
+  describe "self.between(beginning_time, end_time)" do
+    before :each do
+      @beginning_time = DateTime.strptime("2013-11-07 04:34:56 -0800", "%Y-%m-%d %H:%M:%S %z")
+      @end_time = DateTime.strptime("2013-11-10 01:51:24 -0800", "%Y-%m-%d %H:%M:%S %z")
+      @id = 10
+    end
+      it "returns a collection of sales between two specific times" do
+        sales_by_time = FarMar::Sale.between(@beginning_time, @end_time)
+        expect(FarMar::Sale.find(10).purchase_time).to be_between @beginning_time, @end_time
+        expect(sales_by_time).to be_an Array
+        expect(sales_by_time[0]).to be_an Object
+        expect(sales_by_time).to include(FarMar::Sale.find(10))
+      end
+  end
 end
diff --git a/spec/far_mar/vendor_spec.rb b/spec/far_mar/vendor_spec.rb
index a1987411..6f88a23d 100644
--- a/spec/far_mar/vendor_spec.rb
+++ b/spec/far_mar/vendor_spec.rb
@@ -2,11 +2,65 @@
 
 describe FarMar::Vendor do
   before :each do
-    @vendor = FarMar::Vendor.new
+    @vendor = FarMar::Vendor.new(1, "Joe", "10", 4)
   end
   describe "#initialize" do
     it "creates a new instance" do
       expect(@vendor).to be_an_instance_of FarMar::Vendor
     end
   end
+
+  describe "self.all" do
+    it "creates an array of vendors" do
+      expect(FarMar::Vendor.all).to be_an Array
+    end
+  end
+
+  describe "self.find" do
+    it "returns vendor instance where the value of the id the passed parameter" do
+      result = FarMar::Vendor.find(1)
+      expect(result).to be_an Object
+      expect(result.vendor_id).to eq 1
+    end
+  end
+
+  describe "market" do
+    it "returns the market instance that is associated with the vendor" do
+      vendor_market = @vendor.market
+      expect(vendor_market).to be_an Object
+      expect(vendor_market.market_id).to eq 4
+    end
+  end
+
+  describe "products" do
+    it "returns a collection of product instances that are associated with vendor_id" do
+      vendor_product_array = @vendor.products
+      expect(vendor_product_array).to be_an Array
+      expect(vendor_product_array.length).to eq 1
+    end
+  end
+
+  describe "sales" do
+    it "return a collection of sale instances that are associated with vendor_id" do
+      vendor_sale_array = @vendor.sales
+      expect(vendor_sale_array).to be_an Array
+      expect(vendor_sale_array.length).to eq 7
+    end
+  end
+
+  describe "revenue" do
+    it "returns the sum of all of the vendor's sales" do
+      total_sales = @vendor.revenue
+      expect(total_sales).to eq 38259
+    end
+  end
+
+  describe "self.by_market(market_id)" do
+    it "returns all of the vendors with the given market_id" do
+      vendors_at_market = FarMar::Vendor.by_market(4)
+      expect(vendors_at_market).to be_an Array
+      expect(vendors_at_market.length).to eq 4
+      expect(vendors_at_market[0].vendor_id).to eq 13
+    end
+  end
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 42436260..b5c43b74 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -2,3 +2,7 @@
 SimpleCov.start
 
 require "./lib/far_mar"
+
+RSpec.configure do |config|
+ config.order = 'random'
+end