Quote (taltsi @ Tue, Jul 15 2008, 01:12pm)
Learn pentatonic scale, its most (like 99%) used scale in solos. And its easy!
I wouldn't say 99%, but you're right - it is very common.
I would recommend learning more than just one scale, though. Knowing only the pentatonic scale will make your soloing very generic and one-dimensional.
Practice your scales to build chops, listen to a variety of music for inspiration, and before you know it you will start hearing songs in your head that you spontaneously made up. Pick up your guitar, and figure out how to play what you're hearing in your head, and voila! You're a hero.