OK. Here are the Bosses for Ocarina of Time and the tactics you should use to beat them.
Great Deku Tree Boss: Queen Gohma
Gohma was very easy to beat once I figured out that her eye was her weak spot. When you first enter the Boss' Lair, look at the ceiling. Gohma will jump and the battle will begin. There are two ways to defeat her. The first way is to let her climb up the walls. Take your Slingshot out and look at her eye when shes on the ceiling. When it turns red, shoot the slingshot. But you have to do it quickly or she will drop eggs which hatch into tiny enemies. When you have shot the red eye, Queen Gohma will crash to the floor and her eye will be green. Quickly take out your sword and hit her eye as many times as you can. The other way to beat her is, when she is on the ground after coming down from the wall or when you are just starting the battle, throw a deku nut at her eye. This will paralyze her and then you strike her eye. Repeat either process until she dies.
Dodongos Cavern Boss: King Dodongo
To beat King Dodongo, first let him chase you a little. When he opens his mouth, throw a bomb in it. Do it quickly or he will shoot a fireball out of it. After you throw the bomb, he will curl up and spin around the arena. Run off to the side and use your Hylian Shield to block the damage. Repeat this process four times to beat him.
Jabu Jabu's Belly Boss: Barinade
Barinade is pretty tough to beat. First of all, there are pots at the corners of the room which you break open for health. In the beggining, you have to Z-target the tubes connecting Barinade to the ceiling. Use your Boomerang to attack hit the tubes. But be careful because Barinade will be shooting electric blasts at you. The next part of when you are versing Barinade is the part when it spins around and the jellyfish are flying at you attached to Barinade. Aviod this and when the Jellyfish stop moving, attack them with your boomerang. Do this until all of them are gone. When they are gone, attack the center of barinade when she is spinning around. First paralyze her with a boomerang, then attack the center. Keep doing this until she breaks out in pimpples and dies.
Forest Temple Boss: Phantom Ganon
When you enter the Forest Temple Boss Chamber, go up the staircase and walk into the center of the room with with all of the identical pictures. Then turn around and walk back to the gate. The gate will close and the battle will start. You will turn around and see Phantom Ganon. First, you will have to watch the paintings. Find the one where you see Phantom Ganon riding at you with a horse. Keep a eye on that painting and equip your bow. If you're lucky, Phantom Ganon will fly out of that picture and you must quickly shoot him with your bow when he is in the air. If you aren't lucky, he will turn around and ride back up the painting. If this happens, quickly turn around and look for the painting where the real Phantom Ganon comes out of and shoot him with your bow. Repeat this until he stops riding on his horse and hovers around the room. It is sort of like a game of tennis, only with your sword as a racket and a magical ball as the ball. Time your swings when the magical ball comes at you and swing your sword at them. Do this until the ball hits him and hem falls to the ground. Hit him with your sword. Do this until he dies.
Fire Temple Boss: Volvagia
Volvagia is a average diffulculty boss. To beat him, first get onto the platform with the holes in it. When Volvagia appears, wait for him to go under ground. Look for the hole that is bubbleing with lava. Run to that hole. Volvagia will pop out. Heres the fun part. Just like in the Whack-A-Mole game, you have to whack him when he pops out with the megaton hammer. Keep doing this until he goes into the air. He has attacks like making rocks fall from the ceiling and breathing fire at you. Wait until he goes into the ground. Then look for Volvagia when he pops out of a hole and hit him with your hammer. Repeat until he is dead.
Water Temple Boss: Morpha
Morpha looks like a giant pillar of water. To beat Morpha, dodge it's attacks and run up as close to hit as you can without getting into it's attack range where it will throw you into the spiky walls. Shoot your Longshot at the red ball in its center after Z-targetting it. The ball will come up on land. Slash with your sword as much as you can. Then repeat this process until you beat Morpha.
Shadow Temple Boss: Bongo Bongo
Bongo Bongo is a....thing with a big eye and a hand. You must first shoot the hands to stun them with your bow. When they are stunned, turn on the Lens of Truth andyou will see a big eye. Shoot it with your arrow. Then attack his eye with your sword until he is defeated. You will have to watch out for the attacks that the hands do like the the fists that drop on you.
Spirit Temple Boss: Twinrova
Twinrova is actually two people, er, witches. They each have one power. One has fire, the other ice. When one attacks you, block it with your Mirror Shield and Aim it at the witch that posses the opposite power. Do this until they combine into one witch. I thought this part of the battle was easier than the other. In this part, she will shoot either fire or ice at you. You must block the same power 3 consecutive times and then shoot it at her. If another power is shot at you before you have three of fire or ice powered up on your shield, run away! If you are hit you will have to start the process over again and suffer damage. Once you have all three of the power and shoot it at Twinrova, she will fall to the ground. Run to her and attack her mercilessly with your Master Sword. Repeat until she dies.
Ganadorfs Tower Boss: Ganadorf
Ganadorf is very similar to Phantom Ganon. To beat him, first jump onto the outskirts of the room because he will do an earthquake punch, causing all of the tiles surrounding him to fall. Now he will vharge up a ball. Play "tennis" with him and volley the ball until it hits him. Then shoot a Light Arrow at him. He will fall to the ground. Start hitting him with your sword. Keep doing this. Every so often, he will charge up a Giant Magical Ball. While he is charging up, shoot a light arrow at him. He will fall to the ground and you can attack. Repeat until he admits defeat.
Final Battle: Ganon
If you have picked up Nayru's Love from the Great Fairy, now is the time to use it! You won't have your Master Sword in this battle so use either your Megaton Hammer or your Biggorons Sword if you have one. You first have to run and roll in between Ganon's legs while dodging his attacks. Then hit his tail with your sword or hammer. Keep doing this until he falls down. Retrieve your Master Sword and continue in the battle. Now Ganon's a little more aggressive and wiser. You will now have to shoot him with your Light Arrows to stun him and then go attack his tail. Keep doing this until he falls again. Now deliver the final blow to win.