Electric collar use is fairly widespread these days.  You get one idea about how to use it from viewing the video that came with it or reading its instructions.  You get another idea from watching local hunters or trainers use it with their dog.  You can read things on forums and it's almost like politics, you can wildly swing from one side of the topic to the other.  It isn't as much about the collar or the electricity, as it is about understanding your dog, how they think, how they react to training pressure, and how much fundamental work you're willing to put in before turning on the power.  It isn't that the 'good' guys don't use it much and the 'bad' guys do.  It is about understanding pressure, the goal of its use and how your dog processes all of this.  Listen in to a slightly different idea about this tool...