Do you have adsense account?

If not, first you have to apply with some of your sites for Google adsense program
https://www.google.com/adsense/login/en_US/

Once they approve your site then you can add ads.

hey anthony, welcome to adsense world, you should go to your adsense account

here is the tutorial

go to googledotcom/adsense and enter your username and password and login

then click on the adsense setup tab and then click 'adsense for content'

select the size and color, it will show both text and images by default and then submit it and copy the code and place it where you want to place,


i hope this is the answer of the question.