comprehensive book or article needed

Rule number one for a newbie, ignore "tow capacity", it is an incredibly asterisked number, look at the yellow payload sticker on the door. Rule number two, ignore the "dry tongue weight", rule number three, ignore it when the truck or trailer salesman says,"you'll be fine towing that with that". While there is a constant conflict between the "weight police" and the "Detroit builds in a safety margin, you'll be fine with a 1/2 ton" crowd, you need to determine how heavy a trailer you want to tow, and what the loaded tongue weight is, then determine what type of properly equipped truck you will need to tow it.