I will help you. After you build your game. Right Click on it and put it in a .zip(compressed file its sometimes called)
Then go to a site that you can upload it to. I like to use FileFront. A lot of people dont like it but idk why.
http://www.filefront.com/
Next Click on the Upload button right on top menu bar on their site. Select your file and begin uploading it. After its done they should give you a link to your file. This is the link you can post in threads on here so people can download and play your game.
If you need anymore help just tell me!