Looking for beginner accordion tecnnique books

Hi, I just bought my new (used) 80 bass piano accordion. I have been playing piano for 10 years, but I have no clue about bass fingering. I have heard of "Melodic Adventures in Bassland", but is it useful for a 80 bass accordion? I was told it is only meant for full size accordions. For the keyboard side, since I was also told that fingering is somewhat different than that of piano, I downloaded "Fingering for the accordion" by Robert L. Smith.

Do you have any other book in mind that I can use for my 80 bass accordion?

Thanks!