For the past month or so I've had an eleven rack and have been messing around with tones on my 6 string. I've come up with some tones that I'm reasonably happy with; not 100% but they're good enough for practice. The problem I'm having is that when I try to replicate a certain tone, all I have to go off are people describing on the net things like "EQ these frequencies, have this level of treble or bass' etc. This works well enough if you want to get one tone and thats all, but what I want to know is how to use of the different settings on the rack. Sure, I can tweak and tweak but usually the difference in sound is marginal and I don't understand what its doing. I hope this makes sense, I'm struggling to put it into words exactly. Basically I don't want to know how to copy tones of artists, I want to know how to make my own tones by understanding effects, amps etc. Is there somewhere I can learn these things?