in the hidden lake
No, a second Club Penguin has not been created yet.
yes
you find it at the dance club
youyouyou!!
Actually, Club Penguin is a second of Penguin Chat. I doubt they'll make a third, but they won't make a second, because it's already been invented.
The Hidden Lake
key
You can buy a club penguin guide book. Then, look in the content for key merchandise and go to the page.
under the lounge
with a key!
noting
in the library