If this helps, it's designed for unstructured information storage, so fundamentally you use it as you'd use a notebook with the exception that organisation is something you can do ad-hoc. For example ...

Have you ever found yourself staring at a blank page, unsure of how to organize your thoughts or where to even begin? Whether you’re juggling work projects, managing school assignments, or simply ...

What if you could turn your scattered notes, endless to-do lists, and cluttered ideas into a streamlined, digital powerhouse? Microsoft OneNote, a favorite among productivity enthusiasts, offers ...