teach (someone) the tricks of the trade

Translations
научить (кого-то) хитростям ремесла
After years of experience, he was ready to teach his apprentice the tricks of the trade.
После многих лет опыта он был готов научить своего ученика хитростям ремесла.
Definitions
To show or explain to someone the special skills, techniques, or insider knowledge needed to do a particular job or activity successfully.