when i finsh from the lessons that he made what to do next?
You should try to write a program to do something.
also what the heck is QT?
Qt is a "cross platform GUI" C++ library. It allows you to write GUI programs that will are portable to other platforms. This is a big deal because each system that uses a GUI (Window, Mac OS X, Linux) all use different incompatible GUI systems. It is not a new language.
well have you learned about graphics in his tutorials?
if you didn't you should look for some graphics library (for example: SFML) and try to make simple 2D games
no he just teach c++ basics not graphics libray...but he just started QT tut's also i think it would be kinda of hard lol ? i thought u should only learn c++ now i know u should learn QT and graphics stuff if u want to make games/gui