https://americasboatingchannel.com/
https://americasboatingchannel.com/navrules/
https://americasboatingchannel.com/basic-skills/
https://boatlive365.org/resources/?fwp_topics=boat-live-365&fwp_resource_types=video
https://americasboatingclub.org/education-matters/online-boating-education
Intro to OpenCPN Power Point
OpenCPN Basics PDF