Dodongo's Cavern
First, go to the ledge to the left. Take the bomb flower and blow up the Beamos, then bomb the false wall. Open the chest and you'll receive the Dungeon Map. Then go back to the opposite ledge and do the same thing. Go through the door, kill the attacking baby Dodongos along this corridor. You'll find a false wall to the right, the best way to get in there is to kill a baby Dodongo near the door and let its explosion blow up the door. Behind that door is a Gold Skulltula, but avoid the Keese because if a Keese attacks you while your Deku Shield is equipped, it will burn up your shield. After you get the Gold Skulltula Token, go back in the Baby Dodongo's room. Then turn towards the right. Pull the Armos statue on top of the floor switch. Go out the door, watch out for the Keeses in this room also. The next room has two Lizalfos, you must destroy them in order to leave this room. Best way to attack is stab, or lunge then put up your shield to oppose any attacks from them. You can hit it with 3 stabs/2 lunges before it runs off. After you defeat them, exit out the now unlocked door. In this room, I would ignore the baby dodongos and just light all the torches and exit out of this room. Press the floor switch in the next room, then advance back across to the other ledge. Then go through the now unbarred door. Use a bomb flower to blow up the false wall. Hit the Armos in the middle then blow it up with a bomb flower. Open the chest and you'll find the Dungeon Compass. Exit and use the one bomb flower that is by itself and put it in the empty space among the other bomb flowers. After the stairway has dropped, go up it. Go over towards the door up on this second level. Before you exit, kill the Gold Skulltula and get the token. Exit. In this room, kill all the flaming keese and go to the side of the pillar. Move the Armos, walk up the ladder and activate the floor switch. Then exit out this room. Go down the small corridor, kill the keese and go across the bridge. Be careful in the next room. Use Z targeting to avoid the razor things. Go to the end and pull out the block pull it next pillar on the right. Climb up on the pillar. Use the bomb flower to blow up false wall. Then open the chest. Once the wall is gone go through the small corridor. Use your slingshot to shoot the eye above the fire. Then cross onto the other platform. Watch for the baby dodongos in the corridor. The next room has a few Lizalfos in there, destroy them and go to the next room. Here, shoot the eye up on the wall, then jump onto the platform that was covered with fire, look left and shoot that eye also. Then cross the other platform and exit out through the door. In the next room open the chest and you'll find that you now have a bomb bag and you can carry bombs without having to use the flower bomb anymore. Go in the next room and press the floor switch, go towards the right and cross the bridge. Go towards the other end of the bridge and blow up the false wall. Open the chest and get what's inside. Then go back to the holes in the bridge, drop bombs through each of the holes so that each bomb will blow up the statue's eyes. Then, after the mouth opens, drop down and enter through the door of the mouth. In this room, kill the keeses quickly. Go to the room to the right of where you first entered this room. Kill the keeses in this room also. Make your way through this maze like room. Go to the last part of this room, before you exit, there will be a false wall covering a door, blow it up with a bomb. Then go to the second tall pillar and climb up the blocks and climb up onto the small platform and go towards the end. Break open the jars, usually you'll get some kind of refill and a fairy will be in one of those jars. At the end of this corridor, you'll come to a block, push it off the ledge. Then pull/push it till it drops into the hole where the floor switch is. Then go through door that was unlocked. Bomb the false wall then open the chest. Drop into the hole and you'll be confronted with King Dodongo.

Boss: King Dodongo
King Dodongo is pretty simple to kill. Whenever he opens his mouth, just throw a bomb into it, if you ever run out, there are bomb flowers situated in the corners for you to use. Whenever he is down and stunned from the bomb, lunge at him with your sword so he takes a double hit. Do this repeatedly until he is defeated.