Hi Morgan,
I am a sixth grade clarinet player, if you want to learn to read music on the clarinet, I would highly recommend finding a teacher. If you want to teach yourself to play and read music, you can get a book, if you are a beginer, I would recommend getting the book: `Learn as You Play Clarinet`, when I started the clarinet I used it. Another book is: `A Tune A Day`. Both these books can be bought at most music shops.
I hope this was of some help