Dic: prime someone to do something

• Claire wished she'd primed Sarah beforehand. 
• Arnold primed her for her duties.   
• The press corps was primed to leap to the defense of the fired officials. 
• They had been primed with good advice. 
• She was ready and primed for action. 
• He had primed his friends to give the journalists as little information as possible. 

VERB | If you prime someone to do something, you prepare them to do it, for example by giving them information about it beforehand.(= brief)
  
 ~ sb for/with sth | to prepare sb for a situation so that they know what to do, especially by giving them special information.(= brief)

... Cobuild, OALD

cf. to make sth ready for use or action

• The bomb was primed, ready to explode.

.... OALD