Here is a list of some of the topics we will be covering soon on the tech page:
 
Quick fixes to common guitar problems: cleaning out pots and corroded jacks, adjusting the truss rod on a guitar neck, raising the action on an acoustic guitar.

Electronic wiring:  Hi-pass filter to eliminate loss of tone when rolling down the volume, adjusting pickup heights to improve tone, dual sound vs. coil tapping, out of phase wiring.

Most bang for the buck improvements to your guitar: Bone nut and saddle replacements, Tune-a-matic wrap around stop-tail bridges, Setups.