Signature campaign simply is a contract that you're advertising a company for a certain period of time, mostly for a week. You get paid for that. You can notice that we have an advertisement below our posts, it's an advertisement from a certain company and we get paid for that.

You're still a newbie and there's not much that you can do with your signature but you can do some research and look for 777coin or bitvest signature campaign. You can join either of those two. It doesn't pay that much in your rank but as your rank goes up, the payrate gets better and better.