...
Themes and modules creators upload their creation on the PrestaShop Addons website, at http://addons.prestashop.com/, the only official PrestaShop marketplace, where shop owners can find many ways to extend and improve their shop.
Creating an account in is free, and many quality add-ons are free too. Browse the many categories, search for a specific keyword, then buy and download the add-on you need and install it on your shop – either using the built- in installation features of the Back Office or by uploading them directly to the appropriate directory the /modules or /themes folder of your PrestaShop installation.
...