Translation of "Apprenticeship" in Russian

On his way from apprenticeship to mastery, his master now included him in a project

На пути от ученичества к мастерству его мастер теперь включил его в проект

Tom was surprised to learn that Mary was already in the third year of her plumbing apprenticeship.

Том был удивлен, узнав, что Мэри уже третий год учится на водопроводчика.