Hutchison point count system - Omaha
Edward Hutchison has devised this starting hand point ranking system. Here is Omaha High-Low. Links to Edward's pages on Omaha High and Texas Hold'em (both the usual High and High-Low)
Low Limit Omaha
Omaha Strategy guide of highest quality. Features mainly strategy and articles. Geared towards beginning and intermediate Omaha players, but advanced players get some here too. Very instructional and detailed strategy on most playing situations. It is affiliated with UltimateBet. Monthly newsletter. Unique quality content. Highly recommended for beginners.