this is not something you can learn, you need to be the chosen one.
this art is dying soon, good to hear that someone is still interested to know.
you can try your luck in some rural area in China, i believe you can still find some existence.
Once a 問米婆 always a 問米婆
I heard these people are either widowed or spinstered.....so good luck!
Why you want do 巫術師? 巫術 causing 咒詛 to yourself and your next generations.
If you susprised about super natural knowledge, go to church ask Jesus. We have many 代禱者 willing to pray for you without charge. If for money, you can pray to Jesus ask for a good job.