You'll get the hang of it munjit. If you don't mind the wait, you should make some extra beer money to help you through uni with any luck. Hang in there, but don't go day trading just yet.
Regarding oppies, there have been a lot of previous posts on the advantages/disadvantages of DMN vs DMNOC. Just do a search under DMNOC.
I'm holding only DMNOC but hold ORO.