Healing Lyme, 2nd Edition by Stephen Harrod Buhner (My best advice for a beginner in treatment is to go directly to chapter 8 for the core protocol. Especially if you have lyme brain like I had.)
Unlocking Lyme by Willam Rawls, MD. (Easy to read and it just makes so much common sense.)
Buhner's books on coinfections are also very helpful. Those are actually better laid out than the Lyme book.