aiming your mic
The best way to mic a guitar amp (miking guitar amps gives a much better sound and about the only way to go, as opposed to recording the guitar from the line out on your amp) is to place the mic right next to the amp grille (but not touching) right on the seal of the speaker at a 45 degree angle, not pointed directly at the center of the speaker. Place a second mic facing into the room a few feet away from the amp, to capture the sound of the room. This is the most common way of recording electric guitar, and it will give you the best sound. The instructions might be confusing, but youre just gonna have to deal with it. By the way, SM57's beat all.