Largest FREE Microsoft eBook Giveaway: Microsoft eBooks from Eric Ligman (Microsoft Director of Business & Sales Opreations)
https://blogs.msdn.microsoft.com/mssmallbiz/2017/07/11/largest-free-microsoft-ebook-giveaway-im-giving-away-millions-of-free-microsoft-ebooks-again-including-windows-10-office-365-office-2016-power-bi-azure-windows-8-1-office-2013-sharepo/
The second link is from Microsoft Virtual Academy with free eBooks from Microsoft Press:
https://mva.microsoft.com/ebooks#
