What are you trying to build? I would suggest a kit as your first plane. That would give you the wood shaped so you just put it together. If you try to scratch build or design your own too early, you don't have the experience or know how to do things right and it will cost you more in the long run. Your best bet is to build a kit and learn as much as you can. Save the scratch building for later on when you have learned a bit about the planes.