I'm sure everybody does it differently.
without a doubt, everyone has their own way of recording their notes. And it is personal as to what you wish to record. I'm sort of between laissez faire and OCD.
Now here is an example of someone who is very OCD about notes and records. http://www.horscategoriebrewing.com/2016/04/homebrewing-notes.html I met Dave at NHC this past year and he is a nice guy with lots of knowledge.