Teen: I would start with one color of serger thread and use that to get to know your machine. Then you can add speciality threads as you learn what your machine can do and if it’s something you are interested in exploring. I am not interested in speciality threads at this time. I only use white for anything I may want to serge. Boring, I know. Lol!
petthefabric: Way to go on the decluttering of books! I understand not wanting to let them go.