Start small - that's why I suggested a dulcimer. Building one of these is like a course in woodworking, luthery, acoustics, physics, and so forth, all rolled into one. For about $150.00 plus a few basic hardware shop tools (a biggie is simply learning to keep edges sharp), including clamps you can make (that's right - you can make Klemmsia cam - style clamps out of plywood and they're way better than the ones you are likely to buy) (and you can learn the art of rope clamping, a technique imported from Spanish luthiers of two centuries ago, and works slick), you can build something that makes really nice music and then remember all the damn fool mistakes you made - so the guitar kit doesn't suffer for them.