New M4-2

Received this M4-2 as a gift recently. Already figured that the lens is sought after. The camera hasn’t been used in years, and I’m new to Leica, the frame lines and how to get everything in focus. In fact it’s my first camera with film in over 20 years. What should I know about using it, is there any maintenance I should look at?

Also, I just got a Fomapan 24 x 36mm bw film, recommended by a store I went to.

Now off to watch some tutorials, and then I’m curious how the first pictures come out!

And just out of curiosity - how much is this set worth? And would it be completely stupidly to trade up for a digital Leica??