Re: How to set up this truss rod thingy?..
Basically, you want the neck almost straight with just a small amount of relief. A heavy-handed player will need more relief than someone with a light touch, and someone who uses light strings will need more relief than someone who uses heavier strings. As long as you use some common sense, you aren't going to destroy your guitar trying to adjust the truss rod. In most cases, the adjustment nut will strip before you can seriously overtighten the nut. Just don't tighten it past the point where the neck is perfectly straight and you'll be fine.
Ryan