Editing involves piecing together scenes and footage to tell a story or message in a logical order. There are various techniques editors use such as continuity, match cuts, parallel editing, and establishing shots using different camera angles. The history of editing began with one continuous shot films and evolved with pioneers like Edwin Porter and D.W. Griffith introducing concepts like cutting between scenes and different shots. Editing advanced further with sound, techniques like montages, and the introduction of analogue editing machines.