I’m over 50 and all I know about Linux is it’s mascot is a penguin and I think it has something to do with programming. But I’m trying to learn, do new things, and reinvent myself. Where/how should I go about learning? Or at this stage, should I even bother? I do want to learn, tho
GNU/Linux is an OS Kernel on which many many different operating systems (called distributions) are built.
It’s quite a bit easier to think of Linux as a family of operating systems, though. Are you thinking of getting into using Linux? I would recommend checking out Linux Mint as a beginner friendly distro with a familiar interface.