I've looked everywhere and can't find an answer to my problem. I'm trying to do something that seems like it would be relatively simple, but I keep coming up empty: add a pop-up text link to the "node/add/content" form for just one of my content types.
I've figured out how to use the popup module (https://www.drupal.org/project/popup) to make pop-up text elements using blocks, but that won't help me when it comes to the add content page. The idea here is to give users instructions on how to fill out the "add content" form on the form itself. Since I'm using an overlay screen, it makes the most sense to include the link directly on the form itself.
I've seen many places where people suggest a variation on this: Base tpl file for "add content" page?. In other words, copying the node file contents to a new file called
page--node--add--my-content-type.tpl.php in the base theme directory, but this has no effect for me.
Also, I've tried to use the Theme Developer module to figure out what the page is called, but enabling this module just breaks the form for me, rendering Devel useless.
Do I need to somehow manipulate the template.php file in my theme? Any direction anyone can give me would be great. Thank you in advance.