Iskandar

I'm near to finishing A1 (and may not finish it, but that is another topic altogether) I'm getting ready to start A2 and I'm curious to know what skills are purchasable so I can avoid spending skill points. For instance, in A1 you can purchase Cave Lore, 5 points per character. Since that is more than enough to get you through the game, there is no need to train in that skill ever. Later in the game you can also buy 5 points in Bows. While spending a couple of points here is a good thing if you have archers, holding off on training Bow skill until after you buy the first 5 levels also makes sense. So, now that I am moving on to A2, what skills can I buy? Not special skills, mind you, just regular skills. I really hate training up a skill and then realizing that I basically wasted precious skill points on something I could just as easily bought.