Originally Posted by: MikekalashehYou don't need to site read to learn theory on guitar(although it is a great quality to have). Basically just learn theory...and know your instrument really well.

I disagre, I think there is only so much you can learn from tab. I can site read piano for the piano and it makes such a difference to. Writing music by notation is a very logical process, it's like a creative approach to maths. I have recently written a few guitar parts by notation having worked them out on a keyboard first and they are so far apart from hat I would normally play that (in a good way), that I really want to explore this route to playing the guitar.
The roblem with applying site reading to the guitar (from a piano background) is the number of fret options for the individual note. That's why I have always found it very difficult, if not impossible to apply what I learnt for the piano to the guitar.
Everybody learns scales on the piano but you don't actually go into mixolydien, phrygien and ionian like you do on the guitar. It's more about being able to site read Bach and Mozart than anything else. So in short, I do feel site reading for the guitar is important for anyone who is "serious" about learning theory (not just about learning how to "play "rock guitar).