Im thinking of signing up for karate classes. Have a few concerns/questions if anyone knows any answers?

I do karate and it is really fun :)... well I love do martial arts overall. I did mixed martial arts, plus I do boxing aswell :S... but martial arts takes days to understand basic moves and get used to then... But it takes years becoming a black belt. there are tournaments, every style of karate have different rules like kyukashin (can't spell it) that is full contact karate... and then u will hav other styles with different rules lol. my classes cost �5 on Tuesday and �2.50 on thursday lol... but in conclusion, don't go using the moves u learn on people (well practise) but not proper hard... there r deadly moves in karate lol... and don't go bragging at school u r doing karate, cause that could cause fights... Keep it to ur self ok :) it's like a secret :3