It might look easy, but after 40 years, and over 400 custom jobs, I can tell you that the "learning curve" has no end. When you get too confident is when you will get an immediate lesson in "humble". :-(

I would agree with the others here. Take a class if possible. That should teach you all of the needed information to get started. Take note of the basics, and stick to them. No matter how good you get, if you bend the rules, you will get bit. Also, get familiar with one paint system, and stick to it!