Nice site, I work as a Systems and Network Engineer and have been wanting to do something like this for some time. I've had similar things for PHP before that g

Nice site, I work as a Systems and Network Engineer and have been wanting to do something like this for some time. I've had similar things for PHP before that got great feedback but I did it for free. My main worry is how much content I produce and how to value it. Do you ever get requests for refunds? Have you had anyone unhappy with the course etc? Have you done any marketing at all? Or have you just dropped your link in a few places?