Most lessons are presented as Adobe Acrobat (PDF) files.
Acrobat Reader is a free program and is on most computers using Windows.
The latest version of Acrobat Reader can be downloaded (free) at:

www.get.adobe.com/reader/

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Windows 10 - Action Center

 

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Setting Default Programs in Windows 10

Palm Creek Computer Club
Past Lessons 2010 - 2018