I have 3 sergers. I have been doing garment construction for about 35 or more years. the best investment I ever made was the serger. Cut my time down, and makes the garments look professionaly made. For quilting I only serge the edges of yardage before washing fabric. I learned how to thread the machine in under 15 minutes of getting it home. First and foremost, do not be afraid of the machine. If you get a video with your machine watch it a few times if necessary before threading it. Otherwise read the manual and follow the step by step instructions as you learn to thread it. Pay attention to the pictures as you thread the machine.
Good Luck
Suzy