Microsoft has released free Quick Start Guides for its Office 2016 for Mac product suite. The link for Word guide is below.
IT Pro Portal has an article about the release of Office for Windows 10, 8, and 7, as well as, Mac OS. The full suite of products is more oriented to the PC that the previous versions, which had been on a 4 year push to optimize them for mobile devices.
The new suite will probably be released on a subscription model.