Oh, didn’t expect someone studying Quareia here!
It has been a great, comprehensive course, though I use it with the IIH which I think has been recommended here frequently as well. It’s a good foundation, though of course it can’t cover everything. I found it excellent to supplement the gaps in my knowledge, as I came from an eclectic magic background and totally skipped over things like astrology and healing.
I think consistency is really the key, because the course has a lot of concurrent exercises and you have to log almost everything if you’re aiming for mentoring. The FB group (both) has a lot of helpful people, so if you run into any issues, they’ll help!