Is your "compatible soul" motivated to learn? If so, then the issue is how to communicate your knowlege to that person.
Some people are text learners. (Books)
Some people are visual learners. (Watching)
Some people are tactile learners. (Doing)
I have taught for the US Navy, and for my civilian job, but I'm not a certified, professionally trained instructure. I have taken on total newb racing crew and trained them up. My advice is worth exactly what you're paying for it.
I've never assigned homework, but I communicated with my crew constantly through email, posing questions and seeing who could come up with the answer first. They liked that.
I drew sketches in Powerpoint or MS Paint.
I've demonstrated things on the boat for their learning experience, and then have them repeat what I've done.
I try to find "commonality" to help their memory. For instance, most sail control lines are called "sheets". Main sheet, jib sheet, spin sheet, etc.
Color-code the sheets so that you can direct them by color until they remember which sheet is which.
If I think of more, I'll put it up.