HOH Vol 1 is an excellent book for starting out playing a Tight Aggresive style. Doyle's book helps you value mixing up your play. Neither should be the end all to your knowledge but they both help.

If all else fails, AOK's 19 hand philosphy is free, available here and WILL keep you out of trouble. You'll make money with it but slowly. You trade that for less risk though.

I thought Ed Miller's getting started in Hold 'em was pretty good too when I was just starting. Talked mostly about limit though but he threw in a bit of specific info on NL too.