Listen to Something!
1. Choose something to listen to
Think of this as a way to "test the waters" of classical music. It doesn't have to be something completely new to you, either. Have a favorite piece of music? Listen to that. Interested in a particular composer? Find a list of his songs and choose one. If you're still not sure where to start, search for a list of popular classical recordings and choose from there.
2. Listen (more than once) and Learn
You might need to listen to the piece more than once before you "get it" enough to write something about it. This is perfectly fine. Listen to it whenever you can. At work, on a walk, in the car, or with a nice pair of headphones and your eyes closed.
Use the internet to research more about the piece. Do a google search for the piece's "program guide" or "program notes" - this is the pamphlet they hand out at live performances and it gives some insight into the piece.
3. Write Something
After you've listened and feel like you "get" the piece (or even if you don't), write something about it. Your audience for this will be the other members of the study group, so your entry (be it on a personal blog or on the comments of the task itself) should be insightful and informative, but also subjective. Include a link to the piece so that others can listen to it as well.
4. Continue the discussion
Comment on other group member's blogs and continue the discussion.