Administrator's Guide

Here is how the files are organized:
 /admin: contains all the PrestaShop files pertaining to the back-
office. When accessing this folder with your folder, you will be ask to
provided proper identification, for security reasons. Important: you
should make sure to protect that folder with a .htaccess or .htpasswd
file!
 /cache: contains temporary folders that are generated and re-used in
order to alleviate the server's load.
 /classes: contains all the files pertaining to PrestaShop's object
model. Each file represents (and contains) a PHP class, and its
methods/properties.
 /config: contains all of PrestaShop's configuration files. Unless asked
to, you should never edit them, as they are directly handled by
PrestaShop's installer and back-office.