True Shot and the damage portion of Crossbow Expertise are broke, as of the latest
patch.
Elven Sight is much more effective than Ranger Sight. Survivor's Curse is more effective than the mage's Withering Curse, since it can not be resisted.
The Locus Inn - Skill System (individual paths, and a skill table for each class)
iZakaroN's SaveEditor (or from
Kiya's site, with description) will let you redistribute skill points. Usually, though, saving before trying out a new skill is good enough to check if it works as expected and fits your play style.
spoilers;
Kaan's Mage GuidePlaying a mage character...ARIC'S WARRIOR GUIDEAs for bugs, don't toss a teleporter into the castle before getting an invitation and talk to the new duke, or you will break a required quest when you do eventually enter by invitation. I think pretty much everything else is either fixed or there are workarounds if you run into them.
HandEFood;
The second install CD is all character data (the female mage rar file is on the play CD), so a
manual install skipping it should not cause any problems other than not being able to play those characters.