Omaha H/L won't necessarily cost you a lot of money to learn. I lost about $50 playing small stakes HoldEm, and then switched to Omaha H/L, and immediately started making a profit, and on average have continued to do so regularly. Having learnt patience and basic strategy before playing for real money
, I don't think it should be expensive to learn Omaha H/L, and the swings are less than Holdem if you play a solid game (fewer bad beats). You do have to pay attention to starting hand selection and odds
of hitting outs, though, and you do need to understand common holes (such as drawing to a 2nd-best hand, or chasing for only half of the pot).