Gotta be careful about PDF files that would take up too much space on your computer. I downloaded the NCAA football rule book, and saved it on my computer. Computer started to run slow, and then I decided to buy the book online. Got my copy in the mail, then deleted the PDF file, and the computer ran much faster.

By the way, it can be expensive to print a rule book online, because it takes about 100 sheets of paper, and ink can go like crazy printing a PDF file, depending on how it's posted. I did a 150 page file once last year, on a new cartridge, then another 150 page file, and next thing I knew, time to replace the cartridge. I checked my printer settings, and it was on normal ink, etc. Friend explained that sometimes files will have little marks on it when they scan them, that eats up the extra ink. The cartridge I had should have lasted 500 pages. You'd be surprised.