In this room go through the doorway on your right to enter the block puzzle room.  When you come to two movable blocks, pull the ground-level block to underneath the other one.  Then climb on top of it and push the other block off to the other side.  Now push this block to underneath the third block.  Push the third block out of the way and head down this corridor.  At the end of the corridor is another moving block.  Push it off the edge, then pull/push it into the hole in the middle of the room.  This will open the boss room door.  In the boss room, blow up the square in the center of the room, open the small chest to refill your bombs, and drop down.

Dodonogo's Cavern Boss:  King Dodonogo

This boss isn't all that tough.  Z target it's mouth and when it opens it to breath fire on you, throw a bomb in.  When the bomb goes off and it's stunned, hit it with your sword.  Then it will go into a
roll attack. Use your Hylian shield and let it roll over you and you won't get hurt.  Repeat until
dead.  Grab the heart container and step into the blue light to leave.

Magic:

After the short story sequence with the Goron King head up Death Mountain trail.  Use your bombs to blow up the boulders in your way and when you get the part where it start to avalanche, use your Hylian shield and the rocks won't be able to hurt you.  Just wait until they are done falling and then move again until you reach Death Mountain's peak.  Once there, blow up the opening to the left of the owl (do NOT go in the right cave, you'll die) and go inside.  Play Zelda's lullaby in front of the fountain to talk to the great fairy and get magic.  Then talk to the owl and he'll give you a lift down the mountain. Now head to Hyrule Castle.  In the castle grounds there is a side path from the main path with a sign and a boulder.  Blow up the boulder and crawl in the cave to get the fire spell. Now return to Hyrule Field and follow the river East past Kakariko Village to get to Zora's River

Zora's River:

Use your bombs to blow up the boulders in your way.  You can make use of the chicken at the beginning of the river to get to a few heart container pieces.  Also this is where you meet the guy that sells the magic beans (See section 11).  About halfway up the river is some frogs.  Play your songs for them and they'll give you money.  If your money's full go buy some magic beans before playing another song for them.  Make your way upriver until your get to the waterfall at the mouth of the river.  Then stand on the Triforce symbol and play Zelda's Lullaby to make the waterfall reveal a cave.  Jump over and enter the cave to enter Zora's Domain.