The second part of the backup series is getting really long and comprehensive. I'm wondering if it makes sense to break it into more parts, but my concern is that it might then lose focus. It's probably better to just have one long second part, broken down into sections.
I would not break up an explanation into smaller sections, just to have it easily digestible. Focus & concentration is needed; sometimes we have to read whole books in one hit to understand a subject thoroughly
I've done that before and I'm doing a time and time again