Video editing is a very usefull skill. It's rewarding to be able to quickly trim, stitch and edit some clips and maybe throw in some effects here and there.
Davinci Resolve is a surprisingly good tool and for a non-professional it would be my no. 1 recommendation.
I edited my first video this weekend after installing kdenlive and watching a couple of tutorials on youtube.
Learning even the simplest things in another area can be very empowering and rewarding.
Super slow intro to the tool itself: https://www.youtube.com/watch?v=LIIdOlnpRzQ
Simple but effective techniques: https://www.youtube.com/watch?v=cX_xMXzr2XY
https://www.blackmagicdesign.com/products/davinciresolve/
I collect examples of advanced C++. Noticed the lack of educational content at this subject, and planning a short course, something like "Exceptional C++" style, but on video.
In our distributed team we have a practice to make video presentations for colleagues, so I have experience of delivering visual content to tech audience. However, I see that particular course like a high-quality content, with diagrams, animations etc.
That's how I found Davinci Resolve, and you know, it's fun to learn it (even it crashes more than production-ready application supposed to). The only thing that buzz me, is not to forget about the initial goal:)