Zelda: Ocarina of time - inside the deku tree help?

Hmm, You're playing the Master Quest version of it. If you don't know already, the Master Quest version of it is harder. This is what you need to do in the original Ocarina of Time, but I don't know about Master Quest though, you need to get a deku stick (by killing a deku baba (the plants) and hoping for a deku stick insead of a deku nut) then run by a lit torch with the stick (to get the stick lit on fire) and run to the area where there are cobwebs and burn it by the stick making contact with it. Then you continue along the path and you should end up on the other side.