Welcome ! @AJ Rhino - yeah - as the years go by, things happen to us!!!  47- heck you're a youngster - I have 20 years on you and started 5 years back- NEVER too old!!!   Shoulder? mine's OK, but I struggle with my right hand, pinkie especially due to a "crush" injury on my right hand years back....  I didn't seek medical attention at the time and just resorted to washing-out the various cuts and incisions under running cold-water till the bleeding stopped, then covering it all with lots of kitchen towel doused in antiseptic and using duct-tape to finally wrap it all together.... (well, that's just what we do...)  Hmmmm - 

 

I truly hope you get past the shoulder issue and find a comfortable playing hold/position/posture - because - well - it will be the journey of a lifetime !   Enjoy your learning process, never be discouraged, and never hesitate to ask questions on the forum - many levels of players here - all happy to assist.