Tom (@donkeypong) and Kevin (@kevinwong) created a new users guide a while back, and also condensed that into a 10 page PDF. The PDF is linked below.

https://drive.google.com/file/d/0BzjutiBS2DthaG96WmxCT0F2dmc/view

There is also a 40 page book that is on Amazon, but it is showing as unavailable at the moment - not certain what the story is there.

https://www.amazon.com/Steemit-101-Blockchain-Social-Platform/dp/1537774646

I read through the PDF. The power down time needs to be updated,but other than that it looks good. Would be nice to have some veterans look it over and give their feedback.