Just starting the Octatrack Wiki. Since things are so new marking everything as Version 0.99 specific. Once version 1.0 is released pages should be updated.

OT Tips & Tricks - Octatrack Tips and Tricks
OT V0.99 Recording - How to Record with Version 0.99
OT V0.99 Bugs - Version 0.99 Bugs & Feature Requests
OT V0.99 Changing Versions - Upgrading/Downgrading in Versions 0.99x Safely
The Official Elektron FAQ: http://www.elektron.se/products/octatrack?section=faq