I started playing NLH and that is the game I play the most. I have heard that limit holdem is less aggressive so that might suit my personality better but I have not found very many low limit games to try it out. I enjoy playing Omaha hi/low but am not very good, YET. LOL
I read a book written by Annie Duke ( I can not remember the title) so I could learn more about HI/Low stratigy. It was after she won her bracelet in that event but it mostly was autobiographical. There was very little info I could take away from it.
I also enjoy playing Razz and Horse but only freerolls because I am still not good. I have fun though.