Which is the second? I keep meaning to check the library, but last time I looked, I wasn't sure.
"Chamber of Secrets". It's pretty good. Lockhart is grand. Then comes "Prisoner of Azkaban", my favorite, "Goblet of Fire", which is weak, and "Order of the Phoenix", my second favorite.
My sibs and I will quote each other lines from the books, esp. PoA, which has a lot of great one-liners. Or sometimes point at dishes and say 'scourgify' and be disappointed when they don't wash themselves.