Welcome to last year, as Priscilla would say. Yes, I did it, I finally upgraded to Mac OS X El Capitan. I normally don't wait this long to do it, but my previous computer (really, the same computer with the older operating system) had a lot of quirks on it over the years due to several upgrades and no clean installs). I finally sat down and did the "upgrade" as a clean install using DiskMaker X and these instructions. Yada yada yada. I know, boring stuff. I'm a nerd. Har har har.
But man, what a difference this OS makes. My computer is so spiffy now. Fast. I feel like I can do stuff again.