I just got a clarinet about a week ago. Today I finally got to the music store to get reeds and a new ligature piece. I was not able to bring my clarinet, because I did it between client visits while at my internship.
Anyway I didn`t know what kind to get so the sales person gave me one reed for free and told me to try it out. So I have A reed.
How many times may I use it?
May I reuse the little plastic case?
Feedback will be greatly appriciated.
Thank you in advance.

First, you will definitely need to buy a box of reeds. (B-flat clarinet reeds if that is the instrument you have). If you are new to clarinet or haven`t played for a long time, I would suggest 1 1/2 or 2 as the reed strength.

The life of the reed can vary from each brand and how well you take care of it. It is possible for a reed to be "played out" and not be damaged. Those small plastic cases that come with reed do not really work well. You will need a case that hold several reeds. After practice, make sure the reeds are dried off before putting it into case to prevent mold.

Oops, I almost forgot something important, make sure the reed is moist when your are playing. You can put the reed in a small container or cup filled with water while assembling the clarinet. If you are taking a break, you can put a cap over the mouthpiece.

I hope this helps...

You can use a reed until its cracks or until you notice tht its not performing like it used to. And yes can also reuse the plastic case.

Thanks this all really helps a lot I got a box of Rico #2`s today.
Is Rico a good brand?

Personally I really like rico but I think that Rico Royals are really good too.

Regular Ricos and Rico Royals are pretty cheap reeds. I would recommend trying a few different brands and see which one suits you. Vandoren is very popular. I personally use Mitchell Lurie for their consistency.

Ricos are ok for the beginner musician. I personally perfer Vandoren because they last longer and produce a better sound.

Your best bet is too look at reed ebfore you use it, and if its not good enough, chuck. Look for splits and chips especially.