there are legit courses out there, not everything has to be about linkbuilding.
There are brand management courses, that are expensive but big businesses can't get enough of. One of my friends is a social media monitor for a major british chain. They have some pretty impressive software that would make tweetdeck look like MS paint in comparison. Anyone utters anything about the company it gets picked up where it's on a blog post, tweet, facebook comment, or forum. Literally anywhere. They respond to it, treat the complainant super good, rectify the problem straight away and build the brand back up.
he goes on courses on brand management all the time, gets paid shitloads to essentially surf the net. Has serious power too, he has a direct line to all the sales, customer services derpartments and can give away free stuff to anyone.
Just saying, there's a HUUUGGGEE world out there outside of doing seo on small affiliate sites.