Skylight offers a course geared towards those who prescribe ketamine to their patients. The course, which only lasts for an hour (the videos), gives a high-level overview of what ketamine is, how to collaborate with them, and what ketamine prescription can be used for.
The course does feature more textual information, and should be available for $100 for those already experienced with psychedelics. Alas, before the course there is no other public information available.