I will be the first to admit that I like having manuals to read for specific information. Microsoft has now authored documents called Quick Starts for Office 2016. You can see the documents at https://support.office.com/en-us/article/Office-2016-Quick-Starts-25f909da-3e76-443d-94f4-6cdf7dedc51e.
Here are the different versions available.
Download in PDF
Read in Office Sway
For Mac users, the following Quick Start guides exist. The Office 2016 guides are available to download in PDF. They include Word, Excel, Outlook, PowerPoint, and OneNote.
Skype for Business, Mac, and Mobile
Thinking about whether to upgrade to Office 2016? Take a look at the resource guides to help you decide.