as far as your training is concerned, carry laws don't have an effect that I can see....so long as you're not advocating carrying without a license......you're just teaching skills, you're not selling the firearms...and while certain aspects of some teachings my be considered "unethical" to some on some points that in no way makes it illegal.....in other words, as long as you have students and a place to teach them safely....teach away...you don't need anything else unless you posessed your own facility for training