Hi gas hed, thank you so much for your support of Eventide. Congratulations on your new H90 Harmonizer! Currently, the only documentation available is the quick reference guide that came with our pedal and the official user manual, which you can find here: https://cdn.eventideaudio.com/manuals/h90/1.1.2/index.html
Eventually, we will have documentation for the H90 Control app, but it is in the works, as well as supporting video content. In the meantime, feel free to ask any questions here in this thread and we’ll do our best to answer them. I, myself, am working on a video version of the manual, but that’s still a few weeks out.