One thing we all need to remember is that none of us know everything about anything. I read the posts everyday that I can to try to pick-up more knowledge from others and help when I can. There is no book or video that will actually teach everything about painting, or even you how to paint. If you have the knack or ability, practice will get you there. Some people, there isn't enough paint or time to get there. I generally try to throw out suggestions and pointers to help. Quite often, someone will respond that I am wrong. That is their choice. If it is an area that I know nothing about, I say nothing and try to learn.
Every painter has their favorite product, proceedure, and equipment. I try not to recommend a certain brand because everyone has their own experiences and opinions. Painting your own car/truck can have it's own rewards. It can also be extremely depressing when something goes wrong and the cost goes up from there.