1. The document discusses how to manually install a WordPress theme through FTP using Filezilla software. It provides step-by-step instructions for connecting to an FTP server and transferring theme files.
2. It also mentions that there are other ways to customize a Thesis WordPress theme through options in the admin panel for changing design aspects like colors, fonts, navigation menus, and adding analytics tracking codes.
3. Customizing a Thesis theme allows tuning the display of headers, posts, comments, sidebars, and tags on the site and adding features like boxes for multimedia or custom stylesheets.