Find the reeds you need for your clarinet. They come in packages of 3, 10 and 25 reeds. The most popular is the package of 3 and 10 reeds. They also come in different strengths, numbers or "size". For a beginner student, Rico Clarinet size 2
and Vandoren Traditional reeds size 2
are ideal, after a month of playing they can transition to 2.5 and so forth.