Notes in Daisychain make it easy to quickly jot down something that you (or other people on your team) might want to reference later. You can record notes about individual people by viewing their Card in a Pathway or by recording them in their individual Person record.
Notes are especially useful for the kind of information that doesn't make sense to store in a single field. For example, if you're an organizer doing monthly check-in calls with individual volunteers, you might use notes to write a quick summary of the key information you learned from each call so it's available for review later by you or other people on your team.