I'd just suggest finding a few specific types you like and doing a little research on them before you buy. I've just started keeping LPS myself, and they don't seem too horribly difficult. My water parameters aren't perfect (can't seem to get those nitrates much less than about 5 meq/L), but my hammer, candy cane and cup pagoda all seem to be doing quite well. Each one has slightly different requirements and levels of hardiness, though, so be careful about overgeneralizing this (or any) group of corals.