You have a short period of time to work with but it can be done... You won't get instant result running your own sites and with the lack of knowledge you have you won't be able to offer webdesigning etc etc. I suggest you try your luck with ebay, sell information, ebooks, any forum of digital products. Go on ebay and research the market, you can easily make well over the amount your looking for.
I'm working as a freelancer making like 800$/month it's hard at the bigining but afther it's very easy .