I can't shoot skeet, vision won't pick up the fast crossing birds. I do shoot trap, (lots of trap) and find it much easier on the old eyes.
From the 16 yd line Modified is a good choke to start with, wife shoots it and does OK. I've found that some chokes are not what they say, if you really get into the sport you should check the true restriction on your barrel and choke. I've found a .025 to .027 works best for me. ( falls between a Modified (.020 and full .030) A good way to see your pattern and if your gun shoots high/low, left/right is buy using a patterning board. Most clubs have one and it will tell you a lot about your gun.
It's becoming a darn expensive sport lately, but I'm still find ways to shoot around 8000 registered birds this year.