Instructions
Getting the Iron Boots
Head back to Kakariko Village from the Death Mountain trail. You'll encounter a cut-scene and get Link's horse, Epona.
Jump on the horse and follow the on-screen instructions, moving the joystick the direction indicated and then press the "A" button.
Head back through Hyrule Field and Faron Woods to get to Link's home village, Ordon. Go to the mayor's house once you reach the village where you'll encounter another cut-scene in which he teaches Link how to sumo wrestle.
Practice until you can beat the mayor. The mayor will give you the Iron Boots after you beat him.
Head Back to Kakariko Village
Ride back to Kakariko Village on the horse. You will see a cut-scene where children are being attacked when you reach the village.
Follow the monster on horseback after the cut-scene ends. Attack the monster until he leads you into a duel on a large bridge in a new section of Hyrule. Slash the monster twice as you duel to knock him off the bridge.
Head back to Kakariko village.
Catching the Goron
Head up the path to Death Mountain and climb the net leading to where you encounter the Goron.
Equip the Iron Boots to your D-Pad so you can quickly put on and remove them.
Equip the Iron Boots and start up the hill. Use the sumo techniques the mayor taught you to get past the Goron.
Take off the boots and continue up the mountain. Repeat the process as Gorons come rolling down the hill.