To play the game of baseball you need these things: a baseball, cleats, batting gloves, a bat, a baseball glove, a jersey, a hat, and baseball pants.
One of the things you can't do is show up to a game wearing shorts, no hat, no mitt, no glove, and a t-shirt. Sometimes it is very hard to show up to a game or practice in the middle of the summer because it will be very hot out. You have to remember to drink plenty of water or Gatorade.
If you are a catcher then you will need extra equipment, like a catcher's mask, shin guards, a catcher's mitt, and a chest protector. It gets very hot behind the plate. Also the pitchers throw very hard and sometimes it hurts when the ball hits your mitt.