My advice might be a little different than the others.
I never grew up skating as I'm originally from Israel. I did when I was 13-15 for fun and wasn't good, always wanted to be in net as soon as I laid my eyes on hockey. Played lots on the street, gym, in net too. I had a good understanding of the sport.
When I was maybe 25-26 I skated again, took it up and got the crazy idea to start play hockey, mind you, I always wanted to play in net as I said. I would be a good player IF I knew how to skate well. I took up 10 power skating lessons and from there played as a player for a D division for a year, mind you again...an average or below average skater. I wasn't having much fun.
One day I said screw it and got goalie equipment, I didn't care. I played shinny for probably 2 years, all year...it was a struggle but I got down the basic movements, while again, being an average skater.
I'm 41 now, in great shape, and a pretty good goalie. Better than your average beer league goalie, I'm athletic as well and played many other organized sports which helped me. See the thing is, it's the process, and you sticking to it, improving, watching videos. I was never coached but I got by. You don't have to be the best skater if you got the movements, shuffles, cutting angles, reading the play, t-pusges etc. You can do it, but your heart needs to be in it. I stuck to it, and after 11 years in net I'm pretty good, and I don't even play in those lower level leagues.
My fondest memory was playing vs Cammalleri 4 years ago.
One point of advice that will help you, is going on 4mm blades and not 3mm...I think it will help you.