I'm going to add my two cents in case it helps the next person that reads this thread.
Don't be put off by the McRory or Dixon books based on a quick scan of the contents. They both are full of information.
The Modern Kentucky Rifle by RH McRory is $9 at Track of the Wolf. According to my second hand copy, it sells with a full size print that I don't have. It's a little bitty book that reveals every step, but the quality of the photos inside are poor. This is where The Gunsmith of Grenville County really shines for a beginner, especially one that is not familiar with the nuances. In any case, it's worth every cent, and them some.
I flipped through copies of The Art of Building the Pennsylvania Longrifle many times before buying a copy at Dixon's Gunmaker's Fair. I just couldn't see that this book could be of much help before then. I read this one carefully upon returning home, and I'm glad I bought a copy. This is another book worth it's cost, about $22.
I also have copies of Recreating the American Longrifle, Building a Kentucky Rifle which accompanies a video, and How to Build by Cowher, Hunley, and Johnston. I think that every one of these books is worth owning, and I'm picky and not inclined to give a good review of a dog. Every single one of these books either provides information missing from the others, an alternate solution to the various tasks, or a piece of insight missing from the others. I don't have the Ravenshear books, which is probably a failing I should correct.