Taylor, I bought an older Mills book and find it very informative and less expensive it is Evidence! Citation & Analysis for the Family Historian, just a comment. Also check the chart here http://www.bcgcertification.org/resources/standard.html which gives the basis for documentation and analysis of sources. You don't have to read tons of literature to learn.
FHCs If you live in a small rural area it may take more time for you to utilize Fam. History Ctrs. They have one in about every Mormon Temple/Church anywhere, it is an open to the public free research area inside the temple with microfilm readers and access (by renting films from Salt Lake City) anything they have at that library. They have many index films to find the specific films you want to order (cheap, keep two weeks and go there to use). www.familysearch.org also has lists of films they have and you could probably find them there and order it through your chosen FHC without going there first to find it from their index film. (Clear as mud?) The internet abounds with wonderful information getting better all the time BUT no way does it have the "full Monty". My mentor who researched over 50 years always said "Read it for yourself? Look at the real document, not someone's abstract even a book if you want to find the real value of a document. You can miss nuances in deeds and wills, etc by reading abstracts or indexes.
Know your ancestor's stomping grounds and start there, learning about their neighbors then finding their documents it all opens up into a huge new world of family knowledge. The downside: it takes time and not a little money sometimes so learn enough to know what is important for you to spend $$ to get the real thing.
You have probably seen this (if its what you're looking for) but your book is available at half a dozen libraries, albeit spread across the US. Folks have been known to go to SLC on vacation to research the library there. Depends what you think this book would offer you. You can also contact the specific library and ask for assistance/copies of specific pages, indices with names and they are likely to do it if minor help that might guide you to another better source.. I always offer to pay for their service, they often don't ask. Many libraries will do this, I've found them very helpful on line.
I hope this is not a lot of hot air . . . it is not an instant gratitude hobby! LOL!