Good question,,, you may get started by making a hub. Hubs are pages you create here, which will have unique web addresses, just like a site. But beneficial too.
There are many things you can do to make it profitable, like good writing skills, your interaction with others in here etc. But instead of writing it again, i would like to recommend you to read this hub https://hubpages.com/community/Make-Online-Money-O... , where i've already explained the a basics. Well, don't forget to leave your comment before you go from that hub....
always happy to help