How can you have lucid dreams and how can you interpret your dreams and someone else's?

It is really hard to be concious while making your dreams up, in fact it is nearly impossible to go to bed and have a clear thought of “Okay, I am going to dream of this and that, etc.” You have to understand that when you dream, you are unaware that you are sleeping until you can tell the difference between reality and your dream. However, you can always imagine things or picture them in a way that you are obsessed therefore, you keep your thoughts and when you dream, your express your thoughts. For example, when you listen to a song over and over, you eventually get it stuck onto your head or even learn the lyrics. This is the first step into making your own dream. Usually the morning after you dream, you possibly wonder: “Why did I dream of this, it is so unlikely and totally uncalled for” (at least I do.) This is because you had a mere glimpse of imagination or you brought one of your fantasies or thoughts into your dreams. It is true that anything can happen withing your dreams but you can’t really control it. That is why it is also hard to bring someone else into your dreams. If you want to learn more, you can watch a recently new film called Inception. It is a very good movie, but I think it depicts the reality that happens when you are unconscious and how you dream. I hope this helped or answered your question :)