Welcome doc :-)

I retired six years ago and recently decided to take up the guitar.

I noticed the chap in the Facebook video played Silent Night, and beautifully.

My attempt was limited to just finger picking each note but I got there after a couple of weeks.

I couldn't do it at all and then after a nights sleep muscle memory kicked in and I played it (almost) perfectly.

I mention it because it can get frustrating early on, but muscle memory is an important part of the learning process. Be patient ....