Here is a list of a varity of different types of dreams, and a breif explination for what they could mean, or reasons one might have one of thse dream types.
Projections
Dreams are projections, just as we are projected thought experiencing in physical reality. Dreams can be comprised of still images where you may see a face and telepathically receive information from that person or they
Anxiety Dreams, Nightmares can be animations wherein you view animated scenes. These dreams often are fear-based and result in waking up with sweats and heart palpitations. There is generally a situation going on in the person's physical life that results in such dreams. Heed their warning and create change.
Creative Dreams
Within your dream you are shown something you are to create, perhaps something affecting the destiny of humanity. Famous inventors, writers, artists, and musicians were inspired by their dreams.
Color vs. Black and White Dreams
Some people feel that as a dream manifests into third dimension it moves from black and white to color definition. Other believe that black and white dreams are dreamtime but dreams in color are parallel experiences. Further, dreams in black and white indicate an event in the far future, then same scene later manifesting as a dream in color meaning it is getting closer to physical reality.
Teaching Dreams
Dreams can have layers that unfold over many days. In that time, Spirit can teach you through symbols of light or other means that raise your level of awareness. Shamanic dreams often teach lessons.
Repetitive Dreams
You have the same dream over and over as if a message is being sent from other side, which you have to understand. Very often it is you sending yourself a message, often a warning.
Universal Dreams
These dreams are related to information you receive from the collective unconscious, the grids of our experience, akashic records, hall of records, that which creates the reality in which we live. Whenever a dream presents symbols of a cosmic nature, in all probability it is a representation of a Universal dream. Such dreams are reflective of religious experiences, and denote changes that are to occur at some future time.
Shared Dreams
You remember the events in your dream, that involve another person. At the same time, another person in your dream remembers the same events
Spirit Dreams
Messages are given by those who have crossed over or a religious icon. These are often the soul of someone you knew, guiding your journey or telling you that they are okay on the other side
Sexual Dreams
Sex plays a major part in our dream world for many of us. This depends of its importance in our everyday lives. It's a powerful driving force, like hunger and ambition. While we're awake, sex is ruled by social restrictions and conventions, but in our dreams, even the most timid of us can have explicit and excitingly sexy dreams once our repressed selves are asleep. Sexual dreams are very coming during puberty.