Well a good starting point would be our strategy articles:
Omaha Poker: How To Play
Omaha Poker: Preflop & Starting Hands
Omaha Poker: The Flop & Beyond
Omaha Poker: Importance of Scooping
Then of course there is the search function. We've had some omaha discussions, but they aren't as prevalent as hold'em so the seach function is probably the best method for finding old discussions. Plus if you're starting to play it online you can post hands in the Hand Analysis section to get input as well.