Continuity editing aims to make transitions between shots seem smooth and provide a clear narrative. It follows rules like the 180-degree rule and 30-degree rule to avoid confusing the audience's understanding of scenes. Some key techniques in continuity editing include establishing shots, shot-reverse-shot editing, cross-cutting between locations, point-of-view shots, and jump cuts which should be avoided and replaced with angle changes of at least 30 degrees. Transitions like straight cuts, contrast cuts and L-cuts change between scenes and can be used to juxtapose or imply the simultaneity of actions.