The books used as BOS in the NHBOR episode are Culpepers complete herbal and Parkinson’s Herbal
Completing / updating older texts is often a better way to learn than producing perfect reproductions of spells and rituals found on the internet.
It’s always worth carrying on the work of another witch or magician and using what they have created as a spring board to launch your one journey.
There is so much yet to be added to Culpepers Herbal and some of it is correct and other things written more than a little dodgy these days.
If writing in the margins and conducting your own magical research is a viable option, what are all these grimoire "purists" supposed to do with all that turtle blood?
Sarcasm aside, I enjoyed this episode very much!