I am using drupal 7 and my theme is a sub-theme of Zen. What I am trying to do is on some specific pages /volunteers/bigbrothers the layout of this page needs to differ slightly than that of /volunteers.
I am sure this is stupid simple and maybe I'm not googling the correct search terms to find my answer. I'm just not sure what to look for exactly so i'm having a hard time with this.
I've used the page--front.tpl.php to override the homepage but can't seem to figure out how to do this for specific pages.
You are on the right track, template or .tpl.php is the overall direction.
There are node.tpl.php, block.tpl.php, or bigbrothers.tpl.php if you have custom content type called bigbrothers.
Also check here