Here is a real good Winlink resource that is split up into focus subjects
https://www.youtube.com/playlist?list=PL-7mirT-kjfs84FQzLr-qv066Kl94rtYM
Here is a real good Winlink resource that is split up into focus subjects
https://www.youtube.com/playlist?list=PL-7mirT-kjfs84FQzLr-qv066Kl94rtYM