H2 Tag Question

I am trying to add h2 and h3 tags to my blog. Can someone help and tell me where you would put the h2 and h3 tags on the following article. Thanks in advance.
http://fantasticfives.com/top-5-rare-pez-dispensers/

 

You should put them at the subheadings in your article.

If this helps please give me a like

 

You should put them at the subheadings in your article of your blog.