The Modeler's Guide to Scale Automotive Finishes won't teach you anything you can't find here. Pat Covert believes in enamels, laquers, and Micro Mesh polishing kits- he's apparently never used (or maybe heard of?) acrylics. Or
anything Tamiya. There's some decent photography, especially if you're into his tastes in building- American muscle and old clunkers. But if these aren't quite your thing, I'll refer you to the FAQ's and tutorials section.
He also very much writes from a 'one true path' position- as to imply there is only one way to get a good finish. Some of his tips are certainly good, but there are certainly other ways to go about it, with other products and other techniques.
If you can't get this one, don't sweat it mate. It's decent, but certainly not difinitive.