about the shoes, its just disrespect i never heard of any rules giving the reasing why nor have i heard it bringing evil spirits in the room, maybe its a saftey hazard that your shoe could fly off and hit someone or its dirty for the dojo floor because originally dojo is your Senseis home so japanese dont like it when you wear your shoes in there home. really i have not heard a reason why , but i will find out. Ranking systems vary depending on your school or your Sensei's school, sometimes a Sensei will use the same belt and grading systems as his teacher did, and some come up with there own. My Sensei made his own, really it doesnt stray to far away from tradition belt coulers like yellow, orange,green,brown, and black. Unless your in the kids class you get stripes and red, purple category is added in. Adults: white yellow orange green blue brown black-shodan(1st dan) nidan(2nd dan) sandan(3rd dan) chidan(4th dan) godan(5th dan) rookdan(6th dan) sichedan(7th dan) hatchedan(8th dan) kudan(9th dan) Shihan or judan(10th dan/Master) progressing does take a while, if you think you were speeding you usually get stuck at green-brown area, after that it becomes so hard, its pretty much the same things just new kata but a bigger demand on your physical limits but in terms of techniques you have more combinations in your basics coming across the floor, this is what ive been told by my seniors. Advanced technique is Masterd Basics -Mauro[/code]