The document provides information about collage, including its origins and different types. It defines collage as an art form made by assembling different materials to create a new whole. The origins of collage are traced back to early 20th century artists like Picasso and Braque. Different types of collage discussed include photomontage (using photographs), digital/eCollage (using computer tools), and techniques used by artists Dave McKean and Anne Geddes. The document also provides instructions for creating digital and overlapping collages in Photoshop.