Once in Kokiri Forest, climb up the vines behind Mido's house and go through the hollow log to get to the Lost Woods. In the lost woods, follow the sound of the music (wherever it is loudest) to get to the sacred forest meadow. For lazy people, the directions are R,L,R,L,F,L,R. Then kill the wolf, enter the gate, navigate the maze, and go up the steps to get to the Meadow. Talk to Saria to learn Saria's Song. Now head back out of the woods and leave Kokiri Forest. Head to Kakariko Village now.