New Guy Could Use Some Help

#1
I’m new to online chess. Im a retired senior citizen, and I’m Googling and seeking out chess websites, trying to learn what’s available on the web. I’ve played for the MOST-PART against my hand held trusty Novag Sapphire.(rated 2383, if memory serves) But I want new “adventures” playing against real humans because frankly, , the computer is too perfect and very difficult to beat!

I’d like to ask how # 1 how does one go about getting a rating? I know for sure I’m not the best, but it would be nice to at least know where I stand.

# 2 I’d like to ask if there is a good, downloadable chessboard interface that would work with my I-pad (I don’t have a working p.c) only this I-pad. I’m wanting an interface that would store my entered games, play them back, and hopefully give an analysis on those games, pointing out blunders, errors, inaccuracies and suggestions for improvement. 

Thank You