This is not a normal forum, this is an ad revenue sharing forum. The category I recommending is Google Adsense because from this category I found what I need to know and what should I know about Google Adsense. If you wish to learn more about Google Adsense, or know more details about experience of Google Adsense user how they earn money with some simple steps, this is the recommended forum. If you have something you wish to know about Google Adsense, just simply post a title and let people all over the world answer for you.
Besides that, there are a lot more other category for you to chose from. You can find what is relevant to you and get your answer of your question there.