One of the things that makes OneNote excellent is the option it offers for linking to both internal and external references. As you might expect it's easy to add links to web sites by adding a hyperlink to a page, but what I find most beneficial is how you can link other pages within any current Notebooks or to Pages that are part of completely different Notebooks. This kind of Notebook linking capability allows you to create highly sophisticated documents that have both internal and external references
OneNote is not perfect. It still lags behind the Windows versions with relation to features and capabilities. For example, in the Windows version of OneNote you can add an Excel document to a page, open the document, make changes to the spreadsheet, save it, and see those changes reflected in OneNote. If you open the same Notebook in OneNote for Mac you can see the same information, but you can only open a read-only copy of the Excel document. Likewise, I can add an Excel document to a OneNote Mac Notebook by dragging it from the Finder, but once it's part of OneNote it's not editable. Furthermore, if I update that document outside of OneNote my changes aren't reflected in the document I dragged to OneNote.
There have been improvements to linked web pages, although they also remain imperfect. You can add a web page to OneNote using the OneNote Clipper, which gives you the option of adding a whole web page or an individual article to OneNote. Clipped articles retain links and images while web pages appear as images in OneNote. (As an aside, OneNote does a great job of extracting text from images you add to a Notebook.) But there was no way to add video from a web page to a OneNote document. The only option was to add a link to a page with video in it and view that video in your browser. Notably, you can record and playback audio created from within the app.
OneNote remains a powerful tool for capturing notes. While it still lacks features I'd like to see in a note taking app, it remains the most intuitive and versatile app of this sort I've used and my one go-to app for creating sophisticated, multi-layered notes. It lacks all the capabilities of its Windows counterpart and it doesn't offer the the kind of "capture-it-all" versatility you'll find in Evernote, but it provides tools for organizing your notes you're unlikely to find anywhere else.
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