New on steem

Please, how can I link my facebook account with my steem account? I just realized that I have been waisting my time on facebooking instead of making good money on steem still learning how it works though. Also, can one get paid if he referred someone to steemit ? if yes, then I am in for a good business because, I will introduce millions of facebook and other social network lovers in Nigeria and in Africa in general to steemit.com