With OneNote, you can collect and keep all kinds of information in one place, including information from other sources. Instead of retyping information or relying on links to documents and files, you can add content directly into OneNote.
Click Insert > File Attachment.
Find and click the file you want to attach, and click Insert.
A copy of the file is inserted on the current page and shown as an icon that you can open.
Important: OneNote attaches only static snapshots of the source documents or files you insert into your notes; it doesn’t maintain a link to the source file. Changes you make to the copy in OneNote won’t show up in the original. And changing the original won’t update the copy.
It’s possible to embed two types of Microsoft Office files into OneNote that maintain a relationship between their embedded version and their source files: You can add an Excel spreadsheet to a page or add a Visio diagram to a page.