Waze has made a few training videos that have been published on Youtube. While a lot of what they contain is fairly simple, it could still be of interest to a new editor.
Links are below.
https://www.youtube.com/watch?v=9LoyejaNSfM Training from 10:05 to 27:00
https://www.youtube.com/watch?v=mbtPfOEqQp4 Training from 12:55 to 43:00