IDG Contributor Network: macOS: How to speed up a slow Mac

Macs, like any other computer, start slowing down over time. It’s a rather harsh fact of computing life that affects us all eventually. That speed demon Mac you bought a year ago won’t stay that fast as time goes by and, sooner or later, you'll notice the difference in performance.
So how can you speed it up? A writer at CNet has some helpful tips that can make your Mac fast again.
Matt Elliott reports for CNet:The only place I like seeing a beach ball is at a beach or in a stadium