how to add a unity made game to a website (as a browser playable game)?

I’ve got a website and I want to add a game I’ve made i unity to my website. I’ve heard you can build web playable games with unity; but I don’t really understand how I can get it on my site. Any help would be appreciated! (BTW I’ve got unity free)

Under File->Build Setting, you select Web Player, and create your build. Then you juut upload the files that are created and if you enter the url, you will be able to play the game in a browser window over the internet.