I've just started learning the accordion and can play a couple of tunes fairly successfully. I seem to remember when I was a child I had to learn fingering on the piano. My piano teacher taught me to go up and down the scales using the correct fingering. That was so many years ago I've forgotten it all now. Is there anything similar I can do on the accordion and is there a good book or online resource that would teach me the basics? I have lots of friends who play accordion but I'm not allowed to see them due to the lockdown.