If you're starting out with view cameras, making the notes is really a good thing to remind you what everything looks like when you made the exposure. Then you look at the negative and see if you "got" what you thought you did. Then you can adjust your future exposures based on that. Two things to remember about this.

1. If you make notes in the field, make sure you study them and use them. (Thanks to Steve for adding that really important point.) Data is no good unless and until you convert the data into knowledge.

2. Once you gained the knowledge from those notes, you can dispense with the note taking. Why? Because all that note taking slows down the creative process of photography. And isn't that why you're doing photography in the first place? To make photographs, not to do sensiometric studies.