Ok basically what the title ask. There are so many note taking apps available and also the good old notepad, but, how do you take notes? What do you actually take-keep notes on? Is it like complicated things or simple ones?
All time times that I started using an app or a pen and paper intended up just using a simple reminder for things. Others I just remember.
I mostly take notes in markdown on Obsidian. There's a bunch of nice plugins too that can add to your workflow. I don't really use the linking functionality much cause I don't find myself using it a lot even when I do it (and my notes aren't that complicated). I always try to do only point form notes since any longer and I find that it becomes hard to read.
For personal notes I mostly make use of the Kanban plugin. You can make each card an individual note file and then jot stuff down in those to keep track of relevant information.
I mostly use the quick switcher plugin to navigate by he name of the .md file. So everything is only "roughly" organized in folders with minimal nesting.