Always, always, stop people to ask them questions. Whenever they do something you are surprised by or say something you don't understand, ask them to explain.

Always, always, stop people to ask them questions. Whenever they do something you are surprised by or say something you don't understand, ask them to explain. I never fail to get a positive response. Sometimes you feel silly if it was a simple thing, but you get used to that easily, and now you know that thing for the rest of your life.