Some books that I personally think are good for learning how to repair watches. I personally started with the book by Mark Wiles.
A great old school how to manual
The Watch Repairer's Manual
A very straightforward and easy to understand book. I learned a lot of the basics from this one.
Maintaining & Repairing Mechanical Watches
I like that this book is geared towards non-professionals
Watch Repairing as a Hobby: Essential Guide
This book adds none of the fluff. Adds a interesting perspective to this side of watches
100+ No BS Watch Tips for Enthusiasts
While not a book this is a great course to take with step by step instructions on the basics. The videos are nice. I suggest buying the package to save money if you are going to buy a course.