>>434305Ah, I forgot about wood.
Make sure that the neck is always a hardwood. A few good examples are mahogany, walnut, maple, and cherry. If you're making a classical guitar, cedar can be used too, since there's much less stress on the neck. I've seen oak, ash, and even a koa neck too, and those worked as well. I tried to make a neck out of granadillo once, and it was a pain in the dick to work. Clogged up all of my tools, and the sawdust was irritating. The first four I mentioned are easy to work, and the dust is fairly innocuous.
As far as body wood goes, it it's stable, you can use it. I've handled great looking/sounding pine body Teles. As much as it will get naysay'd on the board, it's a great, cheap way to get a guitar built, AS LONG AS IT'S STABLE. I think we all know how much pine likes to split.
Here's what I typically build out of - Ash, alder, basswood, mahogany, ambrosia maple, and sugar maple.
It's really up to you when it comes to electrics.
Acoustics are a whole other beast. My favorite top for is Red Spruce, but most spruces work well. Others that I recommend are redwood (especially sinker logs. That stuff sounds great), Alaskan yellow cedar, Port Orford cedar, and mahogany.
Back and sides? Aw shit. Just start with mahogany, and go from there. Back and sides themselves are a whole friggin' thread, not to mention bracing.