I hope people like you and me will contribute to this discussion.
The main question is how can I be a freelancer?
Well, there is no exact answer how you can be one. No one can make you a freelancer unless you have some skill set to sell.
As, a freelancer I sell my marketing and web developing skill online. I have good communication skill to get clients. My hobby is blogging.
So, now ask yourself what skill you have?