learn schwyzerdütsch

I am living in Switzerland most of the year and want to know, where grown up people can intensively have a course in this language.

I have a few Swiss friends and more and more things Swiss are online. I have a Schwyzerörgeli and a friend who is willing to help me learn to play it. If I get around to it that will help me with my Swiss as well

That’s absolutely the only way to do it. All the alternatives were just not going to cut it for me. I could understand what people were saying after listening to their melodic chiming for about a year, and a couple more years after that I began to be able to talk more or less freely back at them.