Create a new notebook
When you first install and run OneNote, a notebook is created for you. You can create new notebooks any time—and you can have as many notebooks as you want.
Click File > New to display the New Notebook options.
Choose where you want the new notebook to be created (for example, OneDrive or Computer).
Follow the prompts for the location you chose.
When the new notebook has been created, it will show up in your list of notebooks.
Note Notebooks that you currently have open appear in the Notebooks list, which you can view by clicking the arrow next to the name of your current notebook.