Firstly let me express my sadness at the passing of your wife.

Not everyone in their 70s would be able to learn an instrument so huge respect thst you can and, are up for the challenge.

While a few years younger, music is very new to me as well, plus being hearing impaired makes following timings and beats tricky. That said, the beginer courses are really well structured and I am astonished at what I am achieving even after just a month or so.

I hope you have similar experience and I wish you all the best on your own guitar adventure.