Classic NES Series: The Legend of Zelda Cheats

To save your game without dying simply go to the item select screen then push UP + SELECT and you will get the Continue, Save, Retry Menu.

If you bought a red-colored Water of Life, when you use it once, it turns blue, meaning you can only use it once more before it disappears. To refill it from blue to red without buying a second Red Water of Life from the Old Woman, buy a Blue Water of Life. Doing so will make it red again.

Before entering Gohma's room, ready the bow and arrows. Now go inside and quickly shoot an arrow. Gohma will be exactly in front of you with his eye open so he will die in one shot.

Kill all the enemies except for one in a particular screen, and next time you go through there will only be that one enemy there, instead of them all coming back.