There's a search page to help you find a course near you (by zip code)[0]. If you scroll down to the bottom of the table, there's the "NRA Home Firearm Safety Course" which goes over basic handling procedures for various types of firearm. It also goes over some topics more specific to storing firearms in the home, but is mostly a general safety course as far as I understand.
I cannot recommend the NRA as many people (former members, including myself) feel they have gone from being an advocate for the 2nd Amendment in the United States to being a mouthpiece for the Republican Party and it tends to come up with their instructors, classes, and other students and would probably put most progressives off.
I would do research to see if your state offers any sort of Hunter Education programs instead as they tend to focus less on the politics (IMO) are more comprehensive multi-week classes. Plus some of these classes are available for no charge or help the state with preserving vs having to pay for the NRA courses.
https://www.hunter-ed.com/ might be a good place to start.