A Singer serger was with a Bernina and Koala sewing table I bought, used, 4 years ago. It sat for too long because I thought the threading was too complicated. The threading sequence is color-coded and printed on the machine. It's part of the machine and every step is indicated on the threading area. I also printed the manual from the internet. Between those two things I find the threading can be done without tears! Threading is not complicated. It just needs to be done correctly and in the correct sequence. Take your time, follow the instructions. You'll be fine.