Things that took me years to figure out in this game (Spoiler'd for CL)
Spoiler Below
How to get into Hyrule Castle (I didn't know you could pick up bushes; this was the second SNES game I played and my first Zelda)
How to get into the second half of the Desert Palace (I didn't think pushing a block would open a door)
How to get to where the Magic Hammer was (I didn't know you could push blocks into pits)
How to beat the goddamned Helmsaur King
How to beat Trinexx
How to get that Piece of Heart standing on the island in the clouds on Death Mountain
I probably had more dreams about this game than I did any other (except MAYBE OoT, although that was the same dream multiple times as supposed to many, many different dreams). -CSM