Below is a video that will walk through one potential way to use Dropbox with GuidedPath. GuidedPath is integrated with Dropbox for sending attachments with messages, assignments, and appointments.
If you are using dropbox to hold your documents that appear on the Resources section of the student dashboard, don't forget to make those files shareable!
Login to your Dropbox account, and click the "share" button next to the file.
Make sure the pop-up window says "anyone with the link can see it".