Below is my quick reference material used to study for the Office 365 70-347 exam.
I have been administering our company O365 environment for around a year now, and spent about 6 months studying for the 70-346 and 70-347 exams.

The most valuable tool to study for this exam is to setup a free 30day Office 365 E3 trial account, which you can use to play around and break/fix

find the PDF file below:
70-347_Notes