Take the initiative
Before flying with an FO I haven't flown with I ensure I have a few quiet words with him either in the crew room or on the flight deck well before departure time. I start by saying that one of the best safety accessories on an aircraft is an FO who will speak up when and as required. I then go on to say that I expect adherence to SOPs and good check list control. I finish by asking which sector(s) he'd like.
Cilba