You can find the latest version of the Auracle User Guide here:
https://docs.google.com/document/d/1s4SDBoiiCTjJhfR45BVjREZZQCYYO3hA21s_A6fjYos/edit?usp=sharing
You can read it online or download it as a PDF for offline reading.
Since Auracle is currently under rapid development we advise checking back often at this link so you always have the latest version!