It depends on what jewelry you want to make. If it's crystal, you don't need training, just go to work. If it's precious metals or diamonds, sapphires or rubies, you need to have a salesperson qualification certificate issued by the state. If it is silver jewelry, there is no need for training. As long as you know some common sense, such as handling things lightly, don't scratch, grind, smash or fall, and don't touch water with silver; Don't touch anything corrosive; If you don't touch cosmetics, the rest is nothing.