Hoi!
After reading books about building a guitar, it is IMHO very good to read books how to repair them, 'cause the repair-books point out some weak spots and how to fix them.
Its also nice to have a repairbook handy when you build your guitars, it's a good feeling to know you can look things up if anything goes wrong...
The Acoustic Guitar: Adjustment, Care, Maintenance, and Repair (Acoustic Guitar) by Don Teeter
Even if it's about acoustic guitars, loads of info is suitable for solidbody too (neck, finish, crackrepairs...)
Guitar Player Repair Guide: How to Set Up, Maintain, and Repair Electrics and Acoustics by Dan Erlewine
I like both books.
Avor