You have two options:
- If you are in the checkout process, i.e. in your shopping cart, you have the option to Create new address, so you can add your address details quickly and easily.
- If you are not in the purchase process, you can access your personal customer area by clicking on the user icon in the top right corner, and accessing Addresses. There you can enter your details again and as many addresses as you want to have, your home address, your work address, your parents' home address, etc. will be stored.