I am going to become an Ubuntu user in about 5 days -- I just ordered a new (well, refurbished) computer with Ubuntu installed. What do I need to know? What do I need to do? I think maybe I need some veteran Linux guru to take me under their wing and teach me the ropes.

(I don't know what version it will be, frankly.)

(We have about 6 or 7 computers at home and they're all running XP. I just got fed up with MS and finally decided to make the leap with my newest puter.)