The US Power Squadrons offer a class now called Partner in Command - meant to educated the mate / crew in the basics so that if / when the skipper is incapacitated others know enough to take over and get to safety or home port.
I would consider this a starter course to get basic knowledge - the key then is to practice to become familiar w/ those items covered.
I also recommend, if possible, finding another spouse in your marina or other group that has experience and over time pick their brain and have them tutor you on YOUR boat to help you get familiar w/ your own boat.
When I have instructed this I try to get a female to participate as an instructor and we do it as a team. I don't think the material needs to be any different male vs female but having a female presenter especially if the environment can be non threatening - nonjudgmental can make a big difference in how it is received (IMO)
I have seen copies of a seminar "Suddenly Alone" that way very well done. Not sure where it might be offered but here is a link Suddenly Alone
We are fortunate to have a very capable and confident female skipper in our marina that many of the spouses look up to... having someone to consult w/ and ask for help over an extended time can have some advantages over a professional instructor for a limited time period... if you can do both - all the better.