While reading the book is a good idea...its not rocket science, I worked as a tech in the early 90s....no crazy magic to it, baseball card measuring works fine and I just eyeball it and have been for 20+ years to great results.
Nut and fret work require the proper tools and know-how, but a basic setup can be done my any reasonable person. For anyone that has taken there guitar to a tech for a setup, you simply don't have a basic understading of the routine adjustments. Unless you have some bad frets or a bad nut, you typically don't need a tech.