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/

The latest version of the (YTD) video downloader can be obtained at the link below.
Check he progams listed on the right side  “Top Downloads”.

http://download.cnet.com/windows/

Palm Creek Computer Club
Past Lessons 2010 - 2019