You're using 45lb plates? I think trap bar deadlifts would be a good place to start. If you don't have access to one of those then I would say learning sumo can ease you into conventional. T NATION | Deadlifts: Which Type is Best For You?
T-Nation is a wonderful source of info, and they have a ton of deadlifting articles. I'd recommend checking out Eric Cressey and Tony Gentilcores articles on there. They are geniuses.