I'd probably reccomend that as best. Some people just need to be shown rather than explained to.
I've had a few women who know what I do for a living ask me to learn and shown them (it is possible to show the majority of it with clothes on, but if they are comfortable it's better to show with clothes off or at least down to undergarments).
There's all sorts of little things (some you guys aren't even aware of) that go on as part of the session. Some of the smaller things are what make or break a mind blowing sesson.
Unfortunately there isn't a number or website I'm aware of that you can just send your partner to and after a 3 hour course learn to do it. I've though of setting up a service like that using a few MPAs that I know on a part time basis, but doubt there'd be enough demand. But who knows, maybe there's enough making it worthwhile for the potential MPA's to find out if they like enough to start at a spa.