No big earth-shattering revelations, just a practical exchange of thoughts and ideas. Another method is to work with your first dream of your sleep period. Allow yourself to drift off to sleep, but keep reminding yourself that you are aware. Allow your thoughts to form independently, don't try to force them. You may have to repeat the above phrase and remind yourself that you are aware.
Some people fear contacting an evil spirit or unsavory entity.
Once you have ascertained that you have contacted a true Spirit Guide start a conversation. Share thoughts and ideas.