The documentation is well written and thorough. The forum for their forum is thick with developers' and users' input. I received a quick response to one inconsequential issue.
THANK YOU KUNENA!
I needed a calendar for our local pony club that I could edit/update easily, and also assign specific people to update without accessing the back-end of the site. This extension gave me all that, plus the integration of Google maps for our events is a "hit" with our club members. I also enabled the "upcoming events" module which is real handy too.
The documentation is very good and also the videos I found at avmaximus were very helpful.
I had a slight layout issue with one of my templates and the developer answered very quickly in the forum with an easy fix.
A big THANK YOU to this developer for what must have been a ton of work ...all for free!