diff --git a/Auth.js b/Auth.js
new file mode 100644
index 0000000..5ff6bb4
--- /dev/null
+++ b/Auth.js
@@ -0,0 +1,22 @@
+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) {
+        const customer = this.customers.find((customer) => customer.email == email);
+
+        if (customer === undefined) return null;
+
+        return customer;
+    }
+}
+
+module.exports = Auth;
\ No newline at end of file
diff --git a/Cart.js b/Cart.js
new file mode 100644
index 0000000..a9830e6
--- /dev/null
+++ b/Cart.js
@@ -0,0 +1,43 @@
+class Cart {
+    constructor(products = [], total = 0) {
+        this.products = products;
+        this.total = total;
+    }
+
+    addProduct(product) {
+        this.total += product.price;
+        this.products.push(product)
+    }
+
+    removeProduct(index) {
+        if (index >= 0 && index < this.products.length) {
+            const removed = this.products.splice(index, 1)[0]
+            this.total -= removed.price
+        }
+    }
+
+    getTotal() {
+        console.log(this.total)
+        return this.total;
+    }
+
+    clear(){
+        this.products = []
+        this.total = 0
+        console.log(this.total)
+        console.log(this.products)
+        return this.total
+    }
+
+    removeItemByName(name) {
+        const index = this.products.findIndex(product => product.name === name);
+        console.log(`PRODUCTS: ${this.products}, TOTAL: ${this.total}`)
+        if (index !== -1) {
+            const removed = this.products.splice(index, 1)[0]
+            this.total -= removed.price;
+            console.log(`PRODUCTS: ${this.products}, TOTAL: ${this.total}`)
+        }
+    }
+}
+
+module.exports = Cart;
\ No newline at end of file
diff --git a/Customer.js b/Customer.js
new file mode 100644
index 0000000..4601fe1
--- /dev/null
+++ b/Customer.js
@@ -0,0 +1,21 @@
+class Customer {
+    constructor(name, email, shippingAddress) {
+        this.name = name;
+        this.email = email;
+        this.shippingAddress = shippingAddress;
+        this.orderHistory = [];
+        this.rewardPoints = 0;
+    }
+
+    addToOrderHistory(cart) {
+        this.rewardPoints += cart.products.reduce((acc, product) => acc + product.rewardPoints, 0);
+        this.orderHistory.push(cart);
+    }
+
+    getRewardPoints() {
+        console.log(this.rewardPoints);
+        return this.rewardPoints;
+    }
+}
+
+module.exports = Customer;
\ No newline at end of file
diff --git a/Product.js b/Product.js
new file mode 100644
index 0000000..86a4988
--- /dev/null
+++ b/Product.js
@@ -0,0 +1,13 @@
+class Product{
+    constructor(name, price, description, rewardPoints, inStock){
+        this.name = name;
+        this.price = price;
+        this.description = description;
+        this.rewardPoints = rewardPoints;
+        this.inStock = true;
+    }
+    display(){
+        return (`Name: ${this.name}, Price: $${this.price}, Description: ${this.description}`)
+    }
+}
+module.exports = Product
\ No newline at end of file
diff --git a/index.js b/index.js
index efad601..fddba99 100644
--- a/index.js
+++ b/index.js
@@ -1,4 +1,34 @@
 // Import Classes Here
+const Product = require("./Product")
+const Cart = require("./Cart")
+const Customer = require("./Customer");
+const Auth = require("./Auth");
+
+
+const cart1 = new Cart()
+const newProd = new Product("Apple", 12, "An apple", 1.2);
+const newProd2 = new Product("Mango", 20, "A mango", 2.0);
+cart1.addProduct(newProd);
+cart1.addProduct(newProd2);
+cart1.getTotal()
+
+const cart2 = new Cart();
+const newProd3 = new Product("Pear", 15, "A pear", 1.5);
+const newProd4 = new Product("Orange", 30, "An orange", 3.0);
+cart2.addProduct(newProd3);
+cart2.addProduct(newProd4);
+
+
+const customer = new Customer("John", "John@gmail", "123 John Ln");
+customer.addToOrderHistory(cart1);
+customer.addToOrderHistory(cart2);
+
+customer.getRewardPoints();
+
+cart2.removeItemByName('Pear')
+
+// cart1.clear()
+