https://nra.yourlearningportal.com/courses/hunter-education

This NRA Online Hunter Education course is designed to help new hunters of all ages learn how to be safe and responsible members of the hunting community. From the organization that built the first-ever hunter education program in 1949, this state-of-the-art course is the most comprehensive online hunter education instruction in the United States…and it’s 100% FREE

From John Tate:
In 1949, the NRA introduced the first Hunter Safety Course. Over time, it has grown in scope; but the central theme remains safe handling and use of firearms.

Now, exploiting electronic connectivity, this course is available for FREE over the internet. Of the four options, each may have some state-specific content; but the essentials of firearm safety are universal so any course will do.