Couldn't make my mind up where this thread should go so please move if unsuitable.

I randomly discovered some free Microsoft eBooks that might be of use to some fellow users.
The books cover a broad range of subjects including Windows, Sharepoint, Azure, SQL to name a few.
There doesn't seem to be any time limit associated with this site so that's why I didnt put it in Retail Therapy.

https://mva.microsoft.com/ebooks/