Adding Google Adsense to a free WordPress blog is a great way to generate income. Google Adsense is an advertising program that pays you money for displaying ads on your blog. You simply add the code to your blog, and then choose which ads to display. Once you have set up your account, you will start receiving payments for your ad display.
You can also choose to have the ads displayed automatically, or you can choose to have them displayed only when someone clicks on one of the ads. If you have a popular blog, Google Adsense can be a great way to earn a living from your blog. Just be sure to research the program before you sign up, so that you are familiar with the requirements and restrictions.