I just got eager to create a simple game at an age of 15. Then I started to learn PHP and Mysql. At first, it was hard. But most importantly - it was interesting.
And learning was like this:
1) Reading a book and reading tutorials online
2) Asking question in forums
3) And asking people through skype. Half of them blocked me :) However, it was worth.
Good luck and don't give up when you face a problem.