The best way to get accepted into affiliate networks, even without having a website, is to pick up the phone and give them a ring. Explain to them what you are interested in doing and where you are currently at. Most of the time they will be happy to accept you as an affiliate.
When I starting doing PPC I joined PPC Coach - which I am not on anymore - and found it very helpful. It has lead to me doing some great days - over 2k in gross profit. I would recommend it for a beginner as there's so many options you can choose on what you want to do as an affiliate and PPC Coach helps you a lot.
Programmer, web developer and entrepreneur.