My son and I started out with a book, "Build your own electric guitar" by Martin Okham. It was a cool book that included a blue print template and so on.
Best of all it had a list of Tools needed and provided the basics of building a solid body guitar.
I suggest you start by building an electric guitar body, so you can understand the process of tool use and templates. Something like a strat is
pretty simple because all the pick-ups are attached right to the pickgaurd, so the pocket routes are not that critical. The neck pocket was really
the only critical route that was required. After completing this first project, We were able to see the mistakes that were made with routing, cutting and
sanding techniques. One thing that really needs attention, is the finishing of the guitar. While the project ended up looking okay. It needed a different approach to finishing. Different coating, stain, sanding sealer all that stuff. I did not make the neck. It was a little too abmitous at this time
In the end, the guitar came together and is a real player. I've used it on a couple of gigs, and it's just the sound I was looking for. And the fact that it was a father and son project makes it even more rewarding to play and own and gaze at. We're now working on a telecaster body out of Mahogany.
Make sure you ask as many questions as possible. We purchased the swampash for the first project at a local exotic woods retailer on a Saturday morning. There were about 10 guitar makers and they all offered some sort of advice. They love talking about this stuff. Don't be afraid to ask questions.
Good Luck!