You can pick up free a schedule of the classes which gives times, rings, and number of dogs entered. But if you want to see what specific dogs are entered along with the owner's name, sire and dam, and point schedule for the breed in that particular state, you need to purchase the catalogue. You'll either see the host selling catalogues at where you enter or look for signs inside where to purchase the catalogues. Or ask at the superintendent's table. The catalogue covers all days of the dog show.
Have fun!! I can't wait for a show coming up here in a couple of weeks.
Oh, and I almost forgot... on one day, usually Saturday, of AKC shows, they have a session for new exhibitors and spectators 30 minutes before the first class begins. It's usually held near the superintendant's table. Someone gives a brief overview of how the shows work, what to look for, etc. There is also a free booklet available at the superintendant's table for new exhibitors/spectators.