Kind of a broad question. I wonder why people take notes - Is it for studies or learning? Is it just to remember things? Is it to make your own map of your knowledge? Is it because you just want a place to vent out your feelings into the void?
What do you use to accomplish that? App? Paper? A chat room?
I take notes in markdown using Obsidian. I tend to forget things that have happened (or when they happened) unless I am reminded of it, so I keep a daily journal. I also save any good recipes, how I fixed a programming bug or a software issue, just anything I learn that I want to save, or any ideas that I want to remember for later.
I can also quickly search my notes and it's like a mini personal search engine, it's amazing.
I used to write my journal in a private wordpress blog hosted on my computer, and I had so many random text files in so many different folders I could never find them when I needed them, so I'm really happy this program exists 😭