This is too broad, but here are some tips.
If it is like this one
you could start with a nice PowerPoint presentation... Nicer than that example.
So what skills should I familiarize myself
There are three main categories.
1. Videos with significant production value.
Animation, photography, Illumination, music, voice, ...
Some YouTubers add screenshots or images of the sources (I mean part of the source text) to the video and since you are using YouTube you can add those info buttons which will appear in the top right corner of the video.
I agree that it would look a bit weird if you showed full URL addresses in your video, but video description is great place to “hide” ...
The big disadvantage of citations that are part of the video itself is that they can't easily be a link, or even copy-pasted into a search engine like a text citation. So if it's a URL, the viewer will have to pause the video, and type the URL manually. You could use YouTubes "cards" function to add links as pop-up interactive overlays, but I think you are ...