Learn how to create a live dashboard (which refreshes periodically automatically, without any button clicks), on dash, and also how to deploy it on Heroku.
Learn how to add a DB hosted on Heroku to pgAdmin. While the process is straightforward overall, there is one minor thing you need to take care of.
Learn how to get your first free hosted PostgreSQL database on Heroku. This can then be linked to pgAdmin for getting started with DB operations