A great way to promote interaction on your blog posts is to add a call to action button within your blog post. This button could link anywhere-- your contact page on your main website, your facebook, etc.
To get started, click on the BUTTON option in the toolbox to the right of your blog builder.
After you've added the button, click on the text that reads "Click to Add Button Text".
You'll be prompted to add BUTTON TEXT and BUTTON LINK. After this information is added, click on SAVE CHANGES and your button will be added to your post.
Below is an example of what a completed call to action button could look on your live blog post: