Within this tutorial you have learned the fundamentals of acquiring traffic and then in turn monetizing your WordPress sites. There are many ways in which you can generate revenue from your site and you should never limit yourself or close your doors on any single one of these opportunities.
Some people are vastly profitable with Adsense, whereas others are pure affiliate programs. Some people love CPA marketing, whereas some create their own mini-products and sell them via their site.
It may take some time to find your own personal "formula" for succeeding with your WordPress sites, but you now have the tools, the foundation, and some ideas to leverage to get there. As always, if you have any questions regarding WordPress or your personal campaigns, check out the forum.