How many ways are there to make money online?

Geez, where can I start ? Lets see, Google Adsense comes to mind, get a website, write a ton of good content, do search engine optimization to drive traffic to your site. But there is so much more to it. The ads need to blend into the site, be placed in the correct area, the goal here is to get a good click thru rate. How many websites? My goal is to get as many websites out there on the net to start making additional revenue streams.

E-Books, I will eventually write an E-book about the Pay Per Click industry with tips and tricks or possibly a home computer security book. All that is need is some software, a domain name, some great web design and graphic design for the book. I don