[Ethrael]

I understand that you choose a school at 0 level and at 10 you choose your actual class, but does the availability of Sorcerer skills depend on already taken skills or some sort of elemental specialization? For example, can I only get a certain attack if I've taken the slightly weaker version of it before; can I only take some attacks depending on which element I specialize with or are all skills available to me?

Any help would be REALLY appreciated.