They really aren't that difficult to learn, it uses the AD&D rules which are strange, but not overly difficult (I like that Icewind Dale 2 uses 3rd Edition rules, which I'm used to, but Baldur's Gate is utterly superior to it in storyline). The low level limit in BG 1 makes it a difficult game, BG 2 has a much higher level limit and is thus not quite as hard, and quite a bit longer. It's a really good game, I highly recommend it to anyone who has a bit of extra cash.