The best advice I could give a coach would be to understand that you are a teacher. You have a great deal of power in your hands. You have the power to bring out the best in people, or to crush a player's confidence. Realize this power, and always work towards building and motivating as much as possible. As a teacher, a coach must acknowledge the fact that people learn differently.
Some people are spatial, and can walk through a play and learn it.
Some learn through sound, so they can be told what to do, and they will execute it. And still others are visual, and may need to see things on paper. Many coaches may overlook the latter because of the paperwork or organization involved in that form of teaching. If you have your players draw up the plays, write down defensive and offensive rules, and write the things they need to work on themselves, they will have an extra boost in learning your philosophy. Use some time just for things of this nature, and you will most likely find that your players are starting to be on the same page as the coaching staff.