The where is easy. We have a Game Analysis forum where members are free to post their games. The more you annotate your game, generally the better the response. Not many masters comment, but it does happen and generally the analysis of members is well thought out.
As to how, it starts with that little chessboard just above where I'm typing. And that's all I know. Here are some previous threads:
http://www.chess.com/forum/search?keyword=How+to+post+a+game
And here's the chess.com article:
https://support.chess.com/customer/portal/articles/1444794
Have fun!
Hi! My name is Max-Olivier.
I know that I can have my games analysed for free by masters but I don't know how to show my games abd where.
Can anyone help me please? :-)