Find nearest gem:
Beat Ripto them you can Press R3 + L3 and Sparx will point to the nearest gem.
Jump high and walk on air:
Press pause and hit: L1,L2,R1,R1,up,up,down,left,R2.
Gorilla Temple Hint:
In the temple witn the big gorilla, there is an order to lighting the gems. 1st red, 2nd green, 3rd blue, 4th purple, 5th yellow. When you look at the different walls pictures that have the gems in the middle, you just have to count how many squares are around them.
Treasure Hunter:
To get Spyro's ability to find treasure without doing his level, pause the game and press Circle (3), Left (2), Right (2). Left (2), Right (2).