Recurrent dreams, anyone with same experience?

I have dreamed about somebody that I can't see teaching me how to open a strange door, gold metal color, futuristic door and how to get out of that place before something happens. Every time I have it, I understand we are reviewing because I am not suppose to forget step by step how to do it, and that it is necessary that I don't forget it. I have had this dreams at least five times during my life, that I remember. The other one is how to pilot something that is like a jet, shorter, three people capacity but it doesn't need a runway, it floats, but with propulsion system, it can land anywhere even on a moon like--place where stars can be seen, but I am like engineer on electronics or mechanical and the other two are, one pilot and one is geologist (Geologist is always taking samples of the sandy-rocky surface). This dream at least three times. I am not the pilot but I'm suppose to learn how to do it and not to forget it. Strange thing.