How many volumes of glee are in the first two seasons?

I just start the Glee DVD box set cheap on sale from the third season. I think it is a nice tv show. But I was wondering how many volumes of glee are in the first season?
A1: The frist season of glee has totally 22 episodes and the second season has 22 episode, too. Hope you enjoy the show!
comes from: http://digg.com/news/entertainment/how_many_volumes_of_glee_are_in_the_first_two_seasons