Becoming a publisher

When you sign up for an account at adsense or at bidvertiser you become a publisher. Which basically means that you are publishing ads for their advertiers. When anyone clicks on those ads you will earn money.
For adsense there are many sites that you can use to do what they call a revenune share, which is where the site you are using your adsense on gets a % of your earnings from adsense on that site.
I highly reccomend for your first site to try a blog at blogspot.First of all its very easy to start a blog and you don't have to learn how to add the adsense codes right away. But trust me this is something you will need to learn and we will cover all of that here as well.
I have many Adsense groups here listed and you may check out them as well for some great tips and ways to earn with adsense or any advertiser.