OK, I'm 48 yrs. old. I want to build bass guitars and guitars for locals. What is the "Best book" or books to read before starting on my journey. I'm thinking I should have about 8 yrs. before I retire. I'm a Mfg. Eng./ Tool & Die Maker/ CNC machine programmer. My thought is to make a "macro" (variable input) style program that I can use to make most necks and maybe a few to cover most body types. I don't want to compete with the big custom builders. Just want to make a few bucks on the side and give the guy who wants a special bass built a chance to buy one without buying a "wish". Any input would be greatly appreciated. Don't worry I'm married I have been called an idiot before.