The discus shoe is different from regular shoes because discus shoes are used in a sports event (throwing the discus obviously). However, regular shoes are used for walking, running, sprinting, etc.
your school uniform or if its just for practice. spandex or basketball shorts and a loose shirt, and also throwing shoes if you have them.
throwing a discus?
You need the hold it properly, and let your index finger (with whatever hand your throwing the discus in) touch the discus last. You need to say to yourself, 'I am going to win!' aswell! :)
Believe it or not, it is called discus throwing.
You can buy discus shoes from a variety of makers, and these are obviously the best type of shoe for the event. However, lacking these, look for a pair of shoes that are broken in and form fitting. Rounded edges on the soles are also very important, and they should be fairly comfortable to stand in on your toes.