Nathan Lovato has a tutorial on using Org-mode with Spacemacs. It’s longer and more comprehensive than Jack of Some’s introductory video on Org with Spacemacs, but as with that video, Lovato’s looks at Org from the Spacemacs user’s point of view. If you’re not a Spacemacs user, you probably won’t find the tutorial too helpful. If you are a Spacemacs user or are thinking of becoming one you might find it useful.
After a short introduction, he covers creating and manipulating nodes, widening/narrowing, lists, and checkmarks. Then he moves on to using Org for task management, including TODO keywords and time tracking.
Next, he takes up using sparse trees, column view, tags, and sorting. He approaches these from the point of view of searching and organizing your data. I, at least, usually forget about sparse trees and column view but that’s a mistake because they can be very useful for accessing your data. Lately, I’ve been making a point of using it just to burn it into my muscle memory.
Finally, he shows how he exports his Org data to his (Android) smart phone using Orgzly. Of course, if you’re living on the Apple plantation, Orgzly won’t work for you but there are other options such as beorg.
The best way to think of this tutorial is not as a how-to but as a demonstration of some of the things Org can do. The video moves quickly but Lovato provides a list of topics and their timestamp so you can easily revisit any topic you want to see again.