Greetings @NoName!
A huge congrats to you for embarking on your journey into herbal studies- it’s just a wonderful area to study! 
The first one that comes to mind (and the most magick-based of the courses I know of) is the Green Witch Herbalism Course here at Spells8 that Siofra mentioned 
I also know that The Herbal Academy has an assortment of courses on many different areas of herbalism (all are online). I haven’t actually gotten around to taking a course with them (but I believe @Jewitch has- here are some of his thoughts on the course), but I have read some of their free herbalism ebooks and have been very impressed with their content!
For self-studies, here is a list of Free Herbalism/Green Witch eBooks you could explore- you may find some additional course recommendations in these books.
You could also do some digging and see if any local apothecaries/herbalists/seed libraries are running courses in your area- some of the best herbalism classes I’ve taken were through locals and local groups. Because of the pandemic, I imagine they may have ways to participate in classes online 
Good luck and blessed studies! 