You’ve probably discovered there are numerous ways to create a border on your quilt, and you may have wondered which is the best.  Then you discover it depends on the project and the effect you desire to achieve.
At the Quilted Paradise Newsletter, I found handy instructions, a primer of sorts, on making various types of borders.  You may want to take a look.
              There also are a number of books dealing with quilt borders that you may want to look at as well.  A border can be part of the art of your quilt.