For using google Adsense we have to first sign up using their google form.
Add the address before your payment is done
Add the site URL
Connect your site to AdSense – There will be a code generated which you need to add in the header of your site.
Once you add the code. They will review your site content and check the content is eligible for ads or not.
Once it is accepted you can have the auto generated ads or created ads as well.