If you want to start working with dreams, the first thing you should do is to train your dream memory. I will not describe here how to do it, because it has been presented many times on pages devoted to lucid dreams. I am sending you to such websites.
I am holding a dictaphone under my bed and after waking up in the morning I am talking to the dictaphone of dreams that I managed to remember.
PS I'm sorry but I do not speak English. I use Google Translate.