ilovefuzz.com

I do all mine, it's fairly simple depending on what needs to be done. The greatest tip is to take it slowly.

This page is related to basses but it's the same theory and the page I use for reference when ever I'm in doubt about doing something.

http://www.tunemybass.com/bass_setup/

It's a really simple concept. Assuming your nut is cut right (you can check by using a capo, and if that fixes high or low action, your nut needs fixing/replacing).

Basically, the saddles of your guitar are adjusted with screws-- allen keys, generally (I've never seen anything else). That adjusts the angle of your strings from the nut. The trus rod is just a screw-- don't let anyone tell you it's some sort of magic. It's a long metal screw that goes down the neck. When you tighten it, it puts tension on the neck-- making it resist the bend of the strings. This bend usually occurs around the 9th fret.

Now, to check your action to see what you need to do. Is it buzzing? Is the action high?

First test: With the string open, is the action high on the 12th fret? If not, move on. If it's high, fret the string and see if hammering a couple of frets higher still seems high. If they feel fine with the 12th pushed down, the trus rod needs to be tightened. If they feel high, the action at the bridge is too high, and you need to lower that saddle. If it's the trus rod, you should feel the same thing on all strings.

Second test: Do the first 5 frets buzz? If so, do the strings stop buzzing as you make your way down the neck? (particularly pasted the 5th fret)? If so, the trus rod is too tight. It needs to be loosened. Again, you should feel this on all strings. If they don't stop buzzing, the bridge is too high, and it could be just one string or all strings, depending on your current setup.

Now, what if they're too high? First of all, get a capo, or do the hammer test like on the 12th fret. If having the first fret pressed down helps, your nut is too high. You need to file it down or have a pro do it. If you have something that will work, go slow, and check often. If the problem isn't the nut, you probably observed that the 12th fret feels high, but in either case, the trus rod needs to be tightened a bit.

Thirds test: Do the high frets buzz? Obvious one, raise the saddle(s).

Now, repeat all tests, because changing something could affect something else.

For trus rod adjustments, don't crank down on it. Only about 1/4 turn or so. It's just a screw, but you could break it, or strip the nut, or something. And always make sure you're using the right size wrench. Most imports are metric.