It's getting to be that time of year when we prune raspberry brambles and highbush blueberries.  Here are some useful videos on the subject from the University of Maine Cooperative Extension:

http://www.youtube.com/watch?v=fm6ZfpGy5oQ&feature=youtu.be

http://www.youtube.com/watch?v=pOzo4s9Z9jE&feature=youtu.be