There is a book, "Rving for Dummies", but it really doesn't cover what you need. Honestly think you'll get good, solid info right here, rather than finding a book. You might search something like "trailer towing guidelines" or something similar. I found a step by step for getting all the weights at the CAT, but that's not gonna do much for you right now. Before you get started on this, go out to your vehicle and look for the sticker that should give you the numbers you need. If you can't find that, call your dealer with VIN# in hand and they can get the exact specs for the way your vehicle is equipped and then the math starts. And, yes, it is confusing. It'll make better sense later on, just stick around and you'll get what you need.