You will be required to wear a uniform. The color of the belt is significant too. Belt colors signify students' ability and skill. The progression starts with a white belt for beginners. As you graduate to higher levels you wear a yellow belt, then purple, green, red, brown and black.
Black belts are the most qualified and highly trained shotokan performers.
But learning is a life-long process. There are ten levels of black belt in shotokan karate. Different schools will have different color progressions. A typical class will begin with stretching and bending to warm up the muscles. Classes always start with a traditional bow showing respect for your fellow students and instructor.