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 hand write them first and then organize important stuff in Obsidian for future reference. Writing stuff down helps me remember it. I carry a pocket notebook and use one page for a weekly todo list and the other for general notes.