[charlieluce]

Something else occurred to me; while I see the benefit in tracking free spells to prompt the user to add them to the spellbook when their character levels up, is it really necessary to split the spellbook display into multiple sections? As far as I know there isn't a bit of mechanical difference once the spells are chosen and in the book. If you really want to make them obvious, you could use an icon or color them green or whatever.