How can I add Adsense code to the site? Can Disqus comment module be added to the site?

[vernetgit]

I want to add Adsense code to my blog posts except the homepage and other pages on the site. In other words, I want to make an arrangement so that ads appear only in the articles. How can I achieve this?

Another issue is, is it possible to add a Disqus-like module to add comments to blog posts? If yes, how can I do this?