Look for a niche to start from, go to clickbank, paydotcom and find a product to promote. I am assuming here that you have done some homework on internet marketing.
You don't have to do anything. Just buy any 4 clicks to riches software on clickbank, that's it. You will click four times and money will start coming out of your ass. That's how we all became millionares in one night.
There are so many affiliate marketing sites providing commission by there product sell, like: ebay, amazon, clickbank etc...
better choose asame niche, about same.
In addition to what others have posted...pick a niche that you have some interest in. If you don't know a thing about FOREX, don't chose the financial niche. If however you love growing and eating organic foods (for example); there's where you would want to start.