Have a look here.

There are tons of free material on the web. Also you can buy e-books about that topic. One good free ebook is "Dotcomology: the art of making money on the internet" from Stone Evans: http://www.101homebiz.com/dotcomology.html

look in business directories and research marketing strategies in general and then this can easily be applied to the Internet. or maybe im thinking about the wrong thing i just done a report in a leave about marketing stratagies and lossly applied it to tesco.