Skills are no longer selectable, but are included in the various Classes. Each is connected to an Attribute, so various ones need improvement for each Class.
* Rogues should improve Cunning to Open Locks & Disable Traps; 40+ is recommended at end game, but some prefer to use items to acquire that total.
* Mages use Magic and Will; prefer 30 Will, and almost all of the remaining pts in Magic (maybe a few pts for DEX and CUN, plus CON for Blood magic, if desired).
* Warriors is STR, DEX, and CON very much like DAO; some WILL is also helpful, I believe.
Talent and Spell tiers offer more variation than before, IMO. For Mages, it can be helpful to fill one or two Schools completely for possible bonuses (eg; I often take all Elemental and Primal spells for Mana Regen perks).
And the colors of items helps determine worth, and Purple and Green may be the best types; pls seek confirmation. And ignore the stars; at least I have.