I have tried some of the affiliate networks suggested but with no luck. My application is rejected in all of them. I don't have any experience in affiliate marketing. However, i do have a lot of information based portals from which i generate revenue. Most of the networks are asking samples for live campaigns or references of other networks managers. I don't know where to start from, please help.
Talk to the reps of aff networks on this forum, there is a few of them actively posting in threads. Im sure some of them will take you on board and help you get your first campaigns going. Once you have a few running, it will be easy to join whatever network you want.
Try to look here for example : http://stmforum.com/forum/forumdispl...etwork-Threads
I've just replied to a similar thread - so I'll just refer you to it:
http://stmforum.com/forum/showthread...l=1#post261088
Which networks have you applied to and got rejected by? If you don't feel comfortable posting them here please send me a PM. I'll do my best to help.
Matuloo's suggestion is also great. We have a directory with skype IDs and STM usernames of many reps from different networks listed in this thread:
http://stmforum.com/forum/showthread...kype-Directory
Don't lose heart! All you need are a couple good networks. Keep trying and doors will open to you. 
Amy
I just got accepted from tapgerine, nutracash and f5 is currently reconsidering my request. Are these networks good to go with?
Also you can find some managers on Linkedin and chat with them for approval.
ok, i will try that.