One Note is one of those Microsoft products that seems to be one dimensional when you first start using it, but it isn’t until you make use of the product that its real value starts shining through. As a task and project management tool, Microsoft OneNote is one of the best tools out there and one the best ways to integrate with other office apps is with Outlook for project management. I know you're thinking, Outlook already has a simple to use task manager? While this is true, the simplicity of it is both it's redeeming quality and downfall.
You are easily able to manage tasks and align them based on the project they're associated with and write notes to go along with the functions, but the user is minimal on the features within these notes. For example, if you need to add spreadsheets, documents, meeting notes associated with these tasks and need them easily accessible you're going to be left hanging high and dry, thankfully OneNote can step in and do this for you.
Adding OneNote to Outlook
To do this from within Outlook, just click on File and then Options. Along the left navigation menu, click on the Add-Ins link.'