About 20 years ago, I was watching one of those shopping channels when a serger came up. I bought it. When it came, I took it out of the box and was so intimidated by it, I put it up in its case. It sat around for 20 years. Someone encouraged me to get it out, and when I did, there wasn't an owner's manual. I ordered another one, and when it came I sat down and threaded the darn thing. I had a horrible time with the lower looper. The pictures both on the machine itself and in the manual didn't look like anything I was seeing. I finally got it though. I then took some practice fabric and did some serging. I had to adjust the tension. Then I packed it all back up and it is stored again for 20 years, I'm sure. I wouldn't buy one unless you sew garments.