There's a lot of info regarding design rules and ways to approach pc designs on the web. If you do a google search for pcb design. You will get 156,000 pages. I found most of the SMT design rules and how to info there. Most of the lower cost and even Protel has download demo software. I haven't found a book that really tells you how to get a design done with the layout software. Some of the manuals with the software aren't well written. The first response about the books included are all valuable especially the Handbook of Black Magic by Howard Johnson and Martin Graham. The latest version of The Art of Electronics has some comments on pc design. The one piece of advice I will give you is be sure to evaluate pc layout software by actually using it to layout your own board. That is really the best way to find out if it will do the job for you. Most of the software is pretty easy to figure out but they all seem to have functions buried in menus that complicate matters.
