To kind of keep track of things I read, or tasks to do, I use notion. It works fine for me.
Streaming/Recording
Like everyone else, I use OBS. OBS is great, because it's not just for streaming, but great for recording videos and has a few nice features for live recording.
I've settled on kdenlive for video editing. I'm still learning it, but it's been working great!
For the times I need to tweak some audio files, I use audacity.