Types of cuts/tranisions

B-Roll.
Video footage that doesn't add anything to the storyline but fills in any gaps by showing more detail in a scene to hide a cut.

45 degree rule.
When swapping camera angles, make sure it is by at least 45 degrees so that there is a decent size jump between the two, so they are not too similar.

Cut on motion.
Motion distracts the eye from noticing cuts. Cutting from a turning head to an opening door looks smoother than a still head swapping to a opening door.

Change focal lengths.
It is good to occasionally change focal lengths during long scenes to make them more interesting. It also allows edits to be more subtle by 'covering them up'.

Cut on similar elements.
Where the first scene is cut to a secondary scene with a similar object on screen, for example, in Apocalypse Now, a rotating ceiling fan cuts to a helicopter.

Wipe.
By using a subject walking across the screen to wipe from one scene to another is a good way of hiding the cut.


*Will add examples at later date