I bought a 2TB one the other day and it took the whole day to set up. The main purpose of it was to upload material here in the UK for my family to view in Australia which has worked quite well. Once given access then they can upload photos, movies and music on to their remote access.
So far the wireless backup of my MBP is so slow that it is taking 2 days to back up my hard drive via fibre optic wifi. I still has 19 hours to go for 300gb worth of stuff.
One thing to remember it only works with wifi. I tried with my 3G iphone 6 and it came back as offline.
There is a forum available:
Personal Cloud Storage - WD Community
I feel I have a lot to learn about it and when time permits I'll report back on further pros and cons, but for £90 I feel it wasn't a bad deal.