You find them when you go look at all the rooms in the house then you find your peers a.k.a Mara, Nick etc.) Then you will find what they say then find them in the house.
in the room where you find the dream master
it is in the treasure chest.
it already came out. if you go on nickalodeon.com, you can find it.
game of senet
the basement
I think so
soon
Not until the next game which should be out soon. The seasons come with a new game corresponding with the seasons. So the tunnels will come with the new adventure.
yes
Go to the attic
near the attic
In the Garden somewhere