Hi there!
At this time we do not have any video tutorials, and the steps are as detailed as they appear in the documentation you are seeing there.
But moving on to see if I can help; so you've already installed a fresh Django app, then step 1 in the Django post-install steps means you should attach that new app to a site that is associated with a working domain (which is step 11 in that process). You will then have to connect to the server over SSH to complete the rest of the post-install steps.
If you are trying to import an existing project, the steps are largely the same, except you would upload your project directory into the Django app directory (example, /home/username/apps/djangoapp/project/), and edit your project settings.py file instead as documented. You would then have to edit the uwsgi.ini file in the Django app directory renaming all instances of 'myproject' to your project directory name.
If you need more specific help accomplishing this, please open a support ticket by emailing support@opalstack.com and we'll be happy to help you further.