Just Bought a Mamiya M645 now how do I use it?

Hello all...

Im trying to get into film photography and decided to spend about a hundred bucks on a used medium format camera. I purchased the Mamiya M645 off of Ebay And I bought a few different rolls of 120 film.

So where do you guys get your film developed?

Does anyone have any words of advice for a beginner in film photography? Thanks!