Anybody there know how to play badminton? can you give me tips on how to improve my game specially my smash?

yes i have played badminton before. I believe the only way to improve your game is keep your eye on the birdie and use your wrist. it's all in the wrist. if you want to work on your smash then you have to get more strength behind your arm as you let your wrist hit the birdie. works everytime because it helped me win a couple of games in gym and i had never played before in my life! hope i helped.