Congrats on the 12" dob. A fine way to get started.
Try this link
http://skymaps.com/downloads.html and print a up a free star chart. That will get you started navigating the night sky.
Try a few searches through IceInSpace. Every question you can come up with will be in here somewhere.
Sometime down the track you will have to learn how to collimate your scope.
Start a collection of the Australian Sky and telescope magazine.
Then you will start looking at better eyepieces, maybe a Argo Navis, then a big eq mount 'cause you want to get into astro-photography and all the bits and pieces for that ....etc.....etc....etc....
Have fun
And don't burn a hole in your wallet to quick...