Exit Kakariko Village and hang a left. Follow the stream (Zora's River). You'll soon see the Owl again. Talk to him.

Place bombs on the rocks blocking your path. By the gate, you'll meet the Bean Guy for the first time. He sells Magic Beans which you can plant in certain dirt areas (like right next to the Bean guy and right outside Dodongo's Cavern). If you plant them now, when you grow older (later) you'll be able to use the sprouts to go places you couldn't. Anyway, buy a bean or two if you want.

You have to get by the gate. Grab the chicken that is near you. Use it to float to the other side of the river. If you fail to make it across and lose your chicken, leave and come back. Continue up the path.

You'll get to some logs that are down in the water. Start to cross them, and you'll encounter some frogs. Play your Ocarina for them and they'll give you a Purple Rupee (50). Anyway, get off the logs and continue on up the path. You'll soon get to a suspension bridge, cross it. Now, you'll see a large waterfall (Sleepless Waterfall). Step onto the pad in front of the waterfall and play Zelda's Lullaby. This will cause the waterfall to stop and you can jump across.

You are now in Zora's Domain.

Explore a little if you want.

Take the path up and talk to King Zora. He mentions that his daughter is missing.

There is a torch near King Zora. Pull out a Deku Stick and light the torch at the bottom of the stairs/path. Light the stick again (if it went out). Now, you have 4 torches to light in rapid succession. One is by the door to the shop, one is in the water, and two are behind the waterfall in the water. They are all basically in a straight line, so be quick. This will reveal a treasure chest. Open it to receive a Heart Piece.

Go back up to King Zora. The tunnel/path off to the left of him is a Diving Game. Do it and grab the 5 Rupees, then, go back up and visit the Diving Game Zora again. She'll give you the SILVER SCALE, which allows you to dive much deeper.

Now that you have the Silver Scale, go to the door underwater (opposite the waterfall) and dive down and through.

This takes you to Lake Hylia. In the Lake there is a bottle, which you can dive down to. Inside the bottle is a letter from King Zora's daughter, telling you that she is inside Jabu Jabu.

If you want, go to the Fishing Shop in the NE and buy a pole. The guy will tell you how to fish. If you pull in a really big fish (10 lbs or so) and bring it back to the guy, he'll give you a Heart Piece.

When you're ready, go back through your little underwater door and back to Zora's Domain. If you don't already have a fish in a bottle, grab one now; you're going to need it. Go up to King Zora and present him with the letter that you just found.

King Zora will scooch over and open a passageway for you. Take it.

You are now in Zora's Fountain. Go to the SE corner of the map, and place a bomb next to the grey rock. This will blow the wall behind it and you can enter. This is a Fairy Fountain where you will learn a new spell: The Farore's Wind. Set a warp place with it inside a dungeon, then, when you are in danger, you can warp back to this spot. Exit the fountain.

Head back toward the entrance, to the "square" on the map. Present Lord Jabu-Jabu with the fish you have in a bottle, and you'll be sucked in. Now, time to battle the Inside Lord Jabu-Jabu's Belly.