1) every one says if you want to improve your improv skills learn scales.What is a scale?

2) Same as above can someone explain what people mean when they say"learn some theory", do they mean learn how to read music?

Thanks Morrie
Both the theory sticky and the crusade articles (in the columns section) will answer your question.
Someones knowledge of guitar companies spelling determines what amps you can own. Really smart people can own things like Framus because they sound like they might be spelled with a "y" but they aren't.
Basically ill answer number 2, u dont have to read music at all. but do what the person above stated

just think of it like this
If you want to call a yourself a mechanic, You would have to no how everything works together and how it becomes it
not just i can change a wheel