Does anybody have any must-reads in this category?
FMS is good. The NASM has a CES cert which has a good book. Read up on some of McGills books/DVDs. Otherwise do a search on here and you will come across plenty of articles/series (Neanderthal No More, etc).
Some people will be able to grasp the concepts with just reading the material. Most (if you do not have a strong background in performance enhancement, biomechanics, rehab) will need the help of continuing education courses and guided instruction.
Thank you very much. I don't have a background in it but I'm not looking to go into it as a career or anything like that. I'm a trainer and would like to be as knowledgeable as possible and this is an area I have pretty much zero knowledge of.