Pretty much every aspect of note-taking is a deeply personal choice based on what you are doing, what the subject is, and what you want the notes to represent in the end. And probably changes over time, of course. You can learn about tools and methodologies but at the end of the day, these are just options to make your note-taking possibly more efficient, they don't help you take better notes, that only comes with experience.
IME you can't be "taught" how to take effective notes any more than you were "taught" to walk or function in society. You just figure it out after a while.