From publisher's description:
Knowledge is Power is a full resource for Tefr narrators running role playing scenarios set in the Tefr World. It includes a comprehensive menagerie of Tefr creatures, the unabridged codex of Enchanting magic as well as the complete system for sorcery.
Currently available for play-testing and feedback in a single volume, this beta version of the Knowledge is Power book may be downloaded for free for play testing
The revised version is currently being edited and early adopters will be sent a discount code when the first edition is published.