Spirit Temple
Climb the stairs and go left. Speak with Nabooru, chief of the Gerudo Thieves, and tell her you are wandering around and that you dislike Ganondorf. Once more, be careful to hold the Hylian Shield when facing fire. Get in the tight passageway and get rid of the bats and the Beamos to unlock the two doors. Then light a Deku Stick, open the door to the right and light the two torches (you can also use Din's Fire). Get out, open the other door and get rid of the Stalfos. Throw the Boomerang at the Skull to stun it and use your Slingshot to defeat it. Then, throw your Boomerang at the diamond behind the wire fence, then cross and open the door. Go straight ahead to the moving trap, then use Din's Fire to get rid of the Gibdo (you can also draw the Gibdo near the flames by hitting the diamond, but it's way harder). Open the next door, always keep moving to avoid the Wallmaster and open the chest on the left. Take the Small Key, then collect the five silver rupees to make the wire fence fall, walk over it and leave from the right door.
Get in the tight passage on the right, open the locked door, get rid of the two Skulltulas on the right wall, then climb this wall. Go to the middle of the room and attack the two Lizalfos. Then, shoot at the diamond with the Slingshot and open the chests spawning, one of them containing some Bombchus. Look at the sun on the ground, then stand with your back against it and launch a Bombchu to the slightly opened wall to create a breach leading outside. Open the door and make the statue fall on the left so the switch is kept pressed. Then, climb the stairs, light a Deku Stick, jump and light the two torches near the big statue (or use Din's Fire). Take the Map in the chest, then climb the wall near the statue that you made fall earlier and climb back the stairs.
Open the two following doors, and then, begin by collecting the silver rupees while destroying some Beamos with bombs or Bombchus. Then, light a Deku Stick and light the three other torches. Pick up the Small Key in a chest, then pull the blocks so that the one with a sun on it is in the light. Open the next two doors.
Iron Knuckle
Hit the iron warrior to awaken him. Immediately hit him once or twice, then step back. Let him get close to you, then when he throws his axe in front of him, quickly step back. If his axe stays stuck into the ground, rush towards him and slash him many times with your sword. Repeat these steps several times. You can also draw him near a pillar so he destroys it, which releases small hearts. Then, open the door and listen to the owl's advice. Pick up the Silver Gauntlets in the chest before witnessing Nabooru being trapped by the witches.
Play the Prelude of Light and turn back to Adult Link. You can then go back to the Spirit Temple or beat the Gerudo Training Ground.