Q&A questions from Facebook 2018/11 video 2 of 3

(Video number two!)

This is the second instalment of answers from the Facebook Q&A responses form two weeks ago. I am grouping these questions by topic, not chronological order. Some questions relate to one another and make for a nice stream of ideas when answered together.

Extensive videos covering these and other topics are found on my USB videos:
Andrew's videos on USB