This is a list of Public availabe material besides BJC and the manual :
- Eckhardt: https://open.sap.com/courses/ct1 (Only German)
There is an English translation of his book:http://ddi-mod.uni-goettingen.de/ComputerScienceWithSnap.pdf
with lots of examples and material, which can be downloaded (In English) - Course by Jens/Jagda: https://open.sap.com/courses/snap1 (In English)
Youtube:
https://www.youtube.com/watch?v=kSLnwUuE3Xg (German)
BJC Channel:
https://www.youtube.com/channel/UCPbcZ6g-RN8u9Wbd0Nt-GNQ/about
This is what I am aware of.
Pls add.