Jim Owens of Mastering Film writes up a good primer on basic editing techniques, including how to best cut between different sized shots, establish location and more.
He writes, "Editing is an unobtrusive skill. If it is done well, the audience does not notice it, but is absorbed in its effect. During an exciting scene, for example, when the duration of shots is made shorter and shorter as the tension grows, the audience is only conscious of growing agitation, and fast-moving action. There are certain established principles in the way one edits, and although like all 'rules,' they may be occasionally disregarded, they have been created out of experience. Here are a few of the most common."
Read the full story here.