This post will update with stat, and a small description as they are aquired/unlocked in the book.
Health: Obviously how much life you have :)
Mana: Used to cast spells and activate certain skills.
Stamina: Used for certain melee attacks, arduous tasks,basically almost anything requiring physical activity.
Strength: Determines Damage, and the maximum load a character can handle( armour weight, item weight ect.)
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Dexterity: Quickens speed of strikes, helps better skills using the hands. ( skinning, fletching, jewlcrafting etc)
Intellect: Increases mana 3 mana per point, and .1 mana regen per second per point.
Wisdom: Increases spell power, and allows more advanced spells to be cast.
Agility: Increases probability of dodging, and slightly increases movement speed.
Vitality: Increases max health by 2 per point.