The Legend of Zelda: Oracle of Seasons/North Horon and Gnarled Root Dungeon

The first dungeon in the game is very simple. There isn't much to it, but enough to give you somewhat of a challenge.

As you enter the first room, head north into the next one. Once you enter, the doors will shut and you will find four peculiar blocks. The one on your top-right is movable. Push it to open up the doors.

Head north again to find a sage. He will mention that you need to relight unlit torches. Remember that. Head back into the block room and resolve the puzzle, then head east.

In this room are four Stalfos. Kill them all to get a Small Key, then head into the block room again. This time, you don't have to mess with the puzzle. Instead, head west and unlock the door.

In the next room are four more Stalfos. Kill them to make a chest appear, which holds the Dungeon Map. Head on north to the next room. Here, you'll face four Zols. Slashing will split them into two smaller blobs called Gels, which you can kill easily.