OmniOutliner is arguably the Photoshop of the note-taking industry; it's endowed with a plethora of powerful abilities that are wrapped in a well-designed experience, and it wears many hats for its many users. It only makes sense, then, for the Omni crew to team up with ScreenCastsOnline
to produce a series of free tutorial videos
that demonstrate some of OmniOutliner and OmniOutliner Pro's key features. If you've ever needed a crash course on everything you can do with this powerful app, these videos range in topics from a basic introduction, levels and styles, columns in notes, embedding files and exactly what's so special about the Pro version.
As one would expect from a website that makes a living out of producing screencasts, these tutorials are very well produced and a great resource for users both old and new.