FMX,
I dont know of any books on painting cars , but if you are in auto body & paint classes , your teacher will show you the correct ways to go about making a quality paint job. Its not something you learn overnight, it comes with doing it right by hand first , because if you cant do it right by hand you will never do it with air tools !!

Lots of gun time will also make you a good painter, learning good gun control is most of laying a nice job.

Prep work is 95% of the job , if its not right then it will never look right.

Spray