diff --git a/classes/Auth.js b/classes/Auth.js
index e69de29..b025d8e 100644
--- a/classes/Auth.js
+++ b/classes/Auth.js
@@ -0,0 +1,17 @@
+const Customer = require("./Customer")
+
+class Auth {
+    constructor() {
+        this.customers = []
+    }
+
+    register(name, email, shippingAddress) {
+        const newCustomer = new Customer(name, email, shippingAddress)
+        this.customers.push(newCustomer)
+    }
+
+    login(email) {
+        return this.customers.find(Customer => Customer.email === email) || null;
+    }
+}
+module.exports = Auth
diff --git a/classes/Cart.js b/classes/Cart.js
index e69de29..6fec1c6 100644
--- a/classes/Cart.js
+++ b/classes/Cart.js
@@ -0,0 +1,19 @@
+class Cart {
+    constructor() {
+        this.products = []
+        this.total = 0
+    }
+
+    addProduct(product) {
+        this.products.push(product)
+        this.total += product.price
+    }
+
+    removeProduct(index) {
+        if (index >= 0 && index < this.products.length) {
+            this.total -= this.products[index].price
+            this.products.splice(index, 1)
+        }
+    }
+}
+module.exports = Cart
\ No newline at end of file
diff --git a/classes/Customer.js b/classes/Customer.js
index e69de29..4cd2b41 100644
--- a/classes/Customer.js
+++ b/classes/Customer.js
@@ -0,0 +1,13 @@
+class Customer {
+  constructor(name, email, shippingAddress) {
+    this.name = name;
+    this.email = email;
+    this.shippingAddress = shippingAddress;
+    this.orderHistory = [];
+  }
+  addToOrderHistory(cart) {
+    this.orderHistory.push(cart);
+  }
+}
+
+module.exports = Customer;
diff --git a/classes/Product.js b/classes/Product.js
index e69de29..1ec885d 100644
--- a/classes/Product.js
+++ b/classes/Product.js
@@ -0,0 +1,16 @@
+class Product{
+    constructor(name, price, description, inStock){
+        // constructor(name, price, description, instock){
+        this.name=name;
+        this.price=price;
+        this.description=description;
+        inStock=true;
+        this.inStock=inStock;
+        // this.instock=true;
+
+    }
+    display(){
+        return `Name: ${this.name}, Price: $${this.price}, Description: ${this.description}`}
+}
+module.exports = Product;
+
diff --git a/index.js b/index.js
index efad601..a13f98f 100644
--- a/index.js
+++ b/index.js
@@ -1,11 +1,9 @@
 // Import Classes Here
 
-
-
-
-
-
-
+const Product = require('./classes/Product')
+const Cart = require('./classes/Cart')
+const Customer = require('./classes/Customer')
+const Auth = require('./classes/Auth')
 
 
 
@@ -46,4 +44,4 @@ try {
     }
 } catch(e){
 
-}
\ No newline at end of file
+}
diff --git a/package-lock.json b/package-lock.json
index 9b68881..5713249 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4717,7 +4717,8 @@
     "jest-pnp-resolver": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/jest-pnp-resolver/-/jest-pnp-resolver-1.2.3.tgz",
-      "integrity": "sha512-+3NpwQEnRoIBtx4fyhblQDPgJI0H1IEIkX7ShLUjPGA7TtUTvI1oiKi3SR4oBR0hQhQR80l4WAe5RrXBwWMA8w=="
+      "integrity": "sha512-+3NpwQEnRoIBtx4fyhblQDPgJI0H1IEIkX7ShLUjPGA7TtUTvI1oiKi3SR4oBR0hQhQR80l4WAe5RrXBwWMA8w==",
+      "requires": {}
     },
     "jest-regex-util": {
       "version": "29.4.3",