Suggested Mage/Wizard Stat Point & Skill Set

[Magister Magi]

So, should I max out my Fire Bolt spell? What other skills would be good to learn? Could you elaborate a little more on the geos and soils? I'm ashamed to admit that I don't remember that term. x.x

And what exactly is sg? I get the feeling it's painfully obvious.

One more question. xD What's the maximum number that a stat can be raised to?