Arduino and Electronics on youtube
Whilst we wait for some more DroneBot episodes I have found an interesting youtube channel that is pitched just about at the right level for me, (early dabbler - especially the electronics stuff).
As an example see this episode on a clever external watchdog timer circuit.
Hope all is well with Bill and he can do some more of his good episodes sometime soon.
If you like Arduinos and ESP32s, check out https://randomnerdtutorials.com/
Lots of great tutorials and several on the ESP32 cam last done by Bill. Well explained and step thru all the code on how things work.
Thanks for the information. This is a great site.