This might not be a very good idea but why don't you read the manga about it? There are quite a few on the net, and it can help you see different things about the game. The manga helped me to see a world more than swordplay, and helped me to see how each different connection affected Link's quest in the future when he was an adult. But you should also check on Majora's Mask, perhaps.
Reading other fics of Ocarina of time like RaZoR LeAf said is a good idea too. Try to keep your ideas a bit different if you want to also. You can read guides and other things to twist and turn the tale. Also keep in mind of the path you will set out for Link. Keep in mind of the different Links and games as well, know when they were questing. Will he time travel again of grow up normally? I won't go much into detail since I can't remember half of what I was thinking.