I think I'm about half-way done with Book 1 after my Sunday veg-fest. The fact that this game pulled me in for nearly a whole day speaks volumes to its awesomeness in my eyes.
Anyway, high praise aside, I have a question that I'm afraid to read too much of the forums for. I read a little bit and hit a spoiler, so don't want to chance that again

Spot hidden: I've made it halfway through the game without the need for this. Narrowly survived some traps, sure, but no deaths from lacking the skill yet. I'm more worried about finding the hidden goodies. I found a gem in the bee cave, and it made me wonder how much of these are in the game and what sort of spot hidden level one would need to find them. Are they game changing or just wallet fillers? I've been pretty successful so far, so no need for more money, just worried about missing game changing events.
Magic skills: Any point to going over skill level 11 (to cast highest level spell)? I assume it adds damage or something, but I currently just use buffs from divination.
If any are curious I am a paladin.
Swords: L11
Heavy Armor: L5-6
Shields: L5-6 (I read these points were wasted, le sigh)
Divination: L8 or so (only spent three on gaining the skill, didn't know about books/trainers early on)
Cartography:L7
Elemental:L1 (or 3 can't remeber)
Enemies (notably the Taurax that just started appearing) have been getting tougher, but I found adding leatherskin to my buffs helped immensely. Plus, if a foe is too tough I just get them to a dark area or wait until dark and use cat eyes to fight them. Makes a huge difference.
Shift-click bashing: I wish this was explained early game, but I figured it out a little later. I'm sure I'd be slightly stronger in the treasure department had I known.
Once again: GREAT F** GAME. I <3 mah Basilisk. I will be eagerly watching this company from now on to see new games that come out.