If you have chosen a product, it will appear in the shopping cart. You will find this at the top right of your screen. When you click on the shopping cart, the information of your order appears.
Here you can review your choices, change the number of items you want to order, delete an item completely or continue shopping to add other items.
If you are satisfied with your order, you can choose to purchase the products by registering as a new customer or logging in with your existing account.