I found this link online and am sharing it. :)
Please keep in mind that this is the version for the Gameboy, not for the Xbox or Nintendo 64
To find the controls, do not look in the description. When the game loads, click "RUN GAME". When the mountain appears, white controls should appear at the bottom as well. Tap the little controller icon to view the controls and change them to your liking.
Have fun! :)