As Nancy says, there are ten "decorations" missing -- small orange disks with pictures on them. You can't solve this puzzle till you find all the disks.
Hint 2
One of them is here in town; the rest are in Magnus's cabin.
Now that you have all the disks, click on the steering wheel and Nancy will start the puzzle.
Hint 4
The goal here is to match up each disk that you just inserted with one of the fixed disks to make a common word, or in some cases a less-common word that's been defined in this game. Read to the end of this hint for a complete list.
Hint 5
To combine two disks, grab the outside of the wheel and spin it around till two pieces you want to combine are on the same spoke, then move the inside disk in so it's next to the outside disk.
Hint 6
One way to tackle a puzzle like this is to first look at all the pictures and mentally give them a name. You can see a footprint in the outside ring, and in the inside ring is a three-legged stool. So if you put them together, they might be "footstool."
Hint 7
Some of the pictures aren't so easy to name. Is that one with the black line twisting through hills a road or a river? Is the piece of wood a board, a plank, or just wood?
Hint 8
Solve the obvious ones first and see what you have left. That will help you decide what name each piece gets.
Hint 9
Remember, the outside disks have to be matched with the inside disks. The word in the outside disk is always first in the final word.