To be able to open a notebook on multiple computers, all you need to do is put it in a location that each computer can access. ...

To be able to open a notebook on multiple computers, all you need to do is put it in a location that each computer can access. When you create a new notebook (File > New > Notebook) pick the option "I will use it on multiple computers" in the New Notebook Wizard and OneNote will guide you through the process: