1- Once decided on the product clic on "add to cart"
2- To make other choices clic on "continue my order"
3- If you have finished clic on "Finalize my order"
4- If you wish to change the quatity of products ordered
4a- Change the quantity
4b- clic on "recalculate"
5- The price is updated regarding the quantity, now clic on "finalize my order"
6- Once finalized, enter your user account credentials or create one.