Denver Public Library's Technology Classes and Workshops
https://www.denverlibrary.org/ctc-classes

New York Public Library Tech Handouts - By Series
https://sites.google.com/a/nypl.org/techconnect/home/class-handouts-by-series

Digital Learn.org
https://www.digitallearn.org/

Free Online Learning at GCFLearnFree
https://www.gcflearnfree.org/

Gail's Toolkit
https://www.gailstoolkit.com/

Techboomers
https://techboomers.com/

Microsoft Digital Literacy
https://www.microsoft.com/en-us/digitalliteracy

Microsoft Office Training
https://support.office.com/en-us/office-training-center

Techsoup for Libraries
http://www.techsoupforlibraries.org/

Northstar Digital Literacy Assessment
https://www.digitalliteracyassessment.org/

Grow with Google
https://grow.google/

Northstar Digital Literacy (including assessments info)
https://www.digitalliteracyassessment.org/

Computer Hope
https://www.computerhope.com/