Outlook notes are an electronic form of paper sticky notes that you can use to record whatever information you desire. You can use them just as you would use paper sticky notes to jot down anything from a reminder to do something after lunch, to a list of people who should attend your next meeting.
Have you ever jotted something down on a sticky note or on a piece of paper, only to not be able to locate that all-important bit of information precisely when you need it? Has there ever been a stage at which you saw something on a Web site, in a document, or in a spreadsheet, and you needed to quickly jot it down before moving on? Quick! I need a pen and paper!