I asked Felicia for some advice on Omaha after I lost a couple of big pots at Ugarte's home game. Here's what she said:
It's the most frustrating, wanting to commit suicide game! And the people who play are the pits. A friend of mine calls it Arguha, because all they do is sit around and argue and fight at the table (and that is true).
Felicia suggested the link: Playwinningpoker.com for sound advice. And she suggested the book: Omaha Hold'em Poker by Bob Ciaffone which she calls... "the Omaha bible!"