Congrats on he new pup!
As far as supplements and feeding "extras" go, you'll find many differing opinions, all with good reasoning behind them. Read what you can, and make the choices you're comfortable with.
I highly recommend reading through the RAW feeding forum posts here, as well as visiting rawdogranch.com. They were both immensely helpful before I took the plunge into raw!
Remember - NEVER be afraid to ask questions. The raw community as a whole has always (in my experience) been more then ready to help anyone - especially "newbies!"