How to REPLACE the REAR STRUTS on a 2000 CHEVY CAVALIER!

What exactly is a "spring compressor" again? I used my Canon G7X for this video, you can get one here if you want: https://amzn.to/2EyYQrX My Moog struts came from rockauto.com, but you can get cheaper struts here: https://amzn.to/2LnA6nf Recorded on 12/17/2018, which was a day when I didn't want to be bothered making a video, but I did anyway, and I'm glad.