A serger is a sewing machine that is used to create finished seams on fabric. It can also be used to create decorative stitches and to hem fabric. A serger is a relatively expensive sewing machine, but it is worth the investment if you plan on doing a lot of sewing.
A serger can sew much faster than a regular sewing machine, which makes it perfect for large projects or for Sewing Professionals. If you are just starting out in your sewing journey, you may not need a serger right away. But as you become more confident in your skills and start taking on larger projects, you will probably find that a serger would be very helpful.