There are two fundamental reasons why you would want to make money with Adsense, the first one is because it's a relatively easy thing to do. If you compare Adsense to affiliate marketing or email marketing or even Facebook marketing you will find that it requires less investment and is much easier to set up and maintain. The second reason is the fact that Adsense is run by Google, one of the biggest Internet companies in the world. Being run by a big company makes Adsense a reliable program, it won't just shut down on you unexpectedly.
If you have a website already, using Adsense if a good way to get your feet wet and start making a little money online before you move into some more advanced money making techniques and strategies. Depending on the type of site you have, you will find that Adsense will remain your top earner even after you diversify your online revenue sources.
If you have any questions or comment about how to make money online with Adsense feel free to share your thoughts in the comment section or on Facebook.