Adding images below nav bar

Hello

We would like to add images below the nav bar on each page of our web site. For example: Click on about us, in the body section of the post we have a nav bar on the left hand side of the page, and the body on the right. We would like to add images to the left of the body text, below the nav bar.

We want to be able to add different pictures for each page of the website.

Any help would be appreciated

The website is https://www.ocextracredit.com

Thank you