I’ve made an excerpt from the book Desktop Audio Technology by Francis Rumsey, specifically chapter 4 that is one of the more complete guides to MIDI I’ve found. It covers most if not everything one needs to understand MIDI not only from a user’s perspective, but also it’s digital structure which I would think is very helpful trying to get the most out of the Electra, all while staying highly readable. Well worth a read!
I’ve uploaded the excerpt to my shared drive: