Beginning to play hockey at an older age is tough because the concept of organized practices pretty much does not exist. For me, I'd wake up super early so I could be out on the ice at a rink in long island city at 7am where I'd be the only one on the ice. I then was able to get onto a team in a league where I was woefully outclassed and felt like an embarrassment every time i stepped on the ice. If I had a chance to get on the ice I'd jump at it because that's the only way to get better.
The more I played the more I was able to start thinking about the little things (keep you legs moving, stick on the ice, lift your head and look to make a pass before throwing the puck away, keep your knees bent, be vocal on the ice, positioning, etc). There's so many simple little things you can do to make yourself a better player. When you're starting out though it feels like things are moving so fast and you're lucky to do any of the above much less not fall over when trying to turn.
These days I'm decent, but not good. I love the sport so much and now that I've moved into my 30's hockey has replaced my social life (I can't deal with hangovers from staying out drinking all the time).
Best decision of my adult life.