I'm getting ready to start joint vocational school for photography. Can someone tell me what I need to know?!?

I'm starting JVS as a junior this year. My dad bought me a Canon Eos Elan 7. I need a lens still. (Any suggestions?). Basically, I want to know how everything works within a camera and all the abbreviations. Can someone just explain EVERYTHING to me? I would also appreciate an email so I can ask questions. (Lexxhasthelove@live.com) Thank you!