Where can I recruit piano tuning apprentices?

Piano tuning is very professional, and it can't be learned overnight. Without good relations, it is basically impossible to learn for free.

I know there are three ways.

1 I went to a professional conservatory of music to study tuning.

Now some piano factories also have tuning training.

Learn from people who can tune (this can be found in local music shops, where lawyers have the most dealings)

In your case, recommend the third method. Ordinary lawyers don't mind accepting apprentices. Those who have spare money don't earn. Moreover, one-on-one teaching is faster, free of time and lower in cost than mechanism training.

Lawyer's qualification certificate can be found online. When looking for a teacher, be careful not to look for half a bucket.