G’day Steve and welcome to the community.
You’re going to fit right in here.
We have lots of old dogs and lots of folk who started/ stopped / started / stopped. We have many who are convinced they cannot sing. Me included - we should look to do a duet, I sing in the key of A flat tyre! haha 
We have folk who need to look at the chord charts. We have folk who want to learn and play some basic singalong songs.
In other words, you are in good company.
Shout out if you have questions, issues and / or need any support.
Cheers
Richard 