THREAD
Embroidery best works using 100% polyester thread, however if you're like me, then you do like to experiment with designs and threads and techniques. But for now i will talk about polyester threads.
Polyester threads come in different weights, the standard is 40Wt (Wt being the unit that measures how many kilometres of that weight (40) is equivalent to 1kg).
The lower the Wt, the thicker the thread is and the higher the number the thinner the thread is, allowing you to do more intricate designs.
Thread weight is important for projects as it can make your design look clean or unprofessional, so you have to be dilligent with the thread weight youre using, but 40Wt is a standard that works for 90% of embroidery so do not stress !