Actually, the best Omaha site on the net is probably BigDaveD's blog at:
http://internetpokerpro.blogspot.com/I would say that Ciaffone's and Reuben's books are the best ones to read.
Also, I doubt you will learn much playing below $1-$2 PLO on the net...instead you are likely to pick up bad habits like calling to hit the idiot end of a straight...
Good luck
Pinkfloydfan