Do you mean this how-to guide probably isn't useful?
I like what the author wrote about the subsequent advice -- pick a niche, go with established competitoin, etc -- but it still feels like it's meant for someone who has found the thing they do which is Special, and I don't yet feel that yet about myself.
I would recommend everyone to spend some time freelancing, even on the side. It completely changes your relation to your work and your client/boss. In a very positive way ( less thinking about affect, more about skills and value).