After Dodongo's Cavern Walkthrough

After you beat Dodongo's Cavern you need to head to the top of Death Mountian. Blow up the boulders blocking the way and use a Hylian Shield to help pass the falling rocks. Take out the Skulltulas and climb the wall. Bomb the weird spot on the wall to find a Great Fairy's Fountain. Play Zelda's Lullaby on the Triforce and you'll learn how to power up your sword.