I've taken a lot of courses, and I've included some tips to help maximize your training experience. Many things I have had to learn the hard way. Feel free to add suggestions as well, and I may add them.
http://www.artofthegun.net/how-to/2014/11/25/how-to-get-the-most-out-of-your-firearms-training
http://www.artofthegun.net/how-to/2014/11/25/how-to-get-the-most-out-of-your-firearms-training