Release 8 more tutorial videos on developing with T3 Framework, check it out at: http://www.joomlart.com/video-tutorials.
Introduce T3 What is T3 Framework
Installation All steps to install T3 Framework
Layout in details Explore T3 flexible layout system
Menu system Configure supported menu systems
Customization See what you can do with T3 Framework
Extend Joomla core Extend Joomla core to max
FAQs You may have same issues
Documentation is a WIP. If you have any specific request or feedback as well as suggestions, feel free to drop us a line in T3 Framework discussion page. We'll try to cover them all.