Been playing for awhile now and im getting sick of playing easy rythym bits. I can play basic solos and can play the opening and chorus of Sweet child O' mine. But I wanna advance my playing by learning some scales but im a little bit lost what scales should i learn to play or should i start with another technique.

Thanks in advance.
buy paul gilbert's intense rock complete DVD. that is great for building technique and knowledge of more advanced scales and modes
One thing I have done over the past year is record my playing every so often. Play it back and listen, you will see where you need work in short order. Be sure to save your recordings, you will be amused after a year or so .