I don't understand having to go to a class to learn how to use a sewing machine. After you have threaded one, there seems to be little difference in any other machine. At least not the ones I have tried. The different bobbin positions might cause a little angst, but you could learn that quickly from the person who gives you possession of the machine. (Or a friend.)
Having said that, I find that the Bernina manual is the thing that is less than user friendly. I usually am able to pick up things by reading, but in that manual, what I want is hard to find. I have my index all marked up so I can find things that are not listed separately in the index.
I still love my Bernina 440, and have been taking it to classes. I'm still able to lift and carry it....yet.
TODAY I'm on my way to pick up my 1951 anniversary Featherweight! ! ! ! !