Windows 10 Tutorial Suggestions

Looking for suggestions on tutorials. Can be anything, programming, scripting, network related, 'how does <blank> work'.
 
Reset and refresh ones would be useful. How to backup would also be of use I would think.
 
Maybe an updated how to "lock down" Windows 10 after the fall update comes out? I think security/privacy guides are always interesting and helpful.
 
Perhaps Telling how right it is to upgrade to Win 10 e.g. version 1803 or 1809> to version 1909 in the right way happens.
 
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