Docs Teach is a fantastic resource for US History teachers that I have shared many times over the years. I like it so much that I include it in my Teaching History With Technology course.  Docs Teach provides teachers with access tools for creating online lessons based on collections of primary source documents.

Docs Teach recently announced the addition of some new collections of primary source documents. Headlining those additions is a collection of letters written by men serving in the Lone Star Division, the 36th Division of the American Expeditionary Forces (AEF) during World War I.

Applications for Education
Docs Teach is free for teachers to use to create and distribute digital lessons based on primary source documents. Docs Teach provides twelve templates that you can follow to create your own online activities. Most of the the activity templates are intended to help students analyze and compare sources.

While not exactly how-to videos, Docs Teach does have six recorded webinars available for viewing on the National Archives YouTube channel.