I LOVE Google Adsense.
If you are looking for a way to monetize you blog or YouTube channel I highly recommend adding Google Adsense and see how it goes.
Please note that Adsense might not always be a good way to go depending on your goals.
Example: I have a website that lists personalized products. I want my visitors to click on the products.
If I added Adsense, the ads would be for my competitors selling similar or the same personalized products.
The money I would make from an Adsesne click would not exceed the money I would make if the customer bought the product through my product link.