I am not what you would call an experienced guitarist, so please bear with me on this one. I know that playing anywhere near Satriani or Vai is a LONG way off at best, but theirs is the kind of playing that I admire the most. My question is, what scales and modes should I be learning to point me in the right direction, and is there a site on the internet that delves into this subject in depth? Don't get me wrong, this site is fantastic, and well worth the high bandwidth subscription that I pay. However, I do find that there is not much order in the lesson content. Okay, I know that was long winded, but a little help would be appreciated.

Take care.