How do you make a lot of the photos in your dreams tag? The blurry, multiple people, multiple colors kind of thing?
They are double exposures. How you do it depends on the camera you have. With a 35mm, you take a photograph, press the button at the bottom of the camera that releases the film, wind the lever that sits on top of the camera, and take a second photo on the same negative. There are youtube tutorials on how to do double exposures with specific cameras as well.