Please Help
You whistle
Get the sheet music off the internet, or buy the book. And then learn it from there.
http://www.fl-oca.com/eng/fing.htm Does this help you?
http://www.musicnotes.com/images/productimages/mtd/MN0072494.gif
More specifically, Low D, B, A, D, and F.
STL Ocarina has a book for 9 holed and above ocarinas
Yes.
Many places. You'll get the most just searching "6-hole ocarina tabs". Or just look for any standard sheet music within it's 10 note diatonic range(if you can read sheet music). If you find tabs that use an ocarina that doesn't look like yours, don't worry, they should still work(if they are for a 6-hole pendant.
Yes, but you need to check that te thickness of the ply is sufficient for any load that it may have to bear.
Most of the Ocarina of Time sheet music is only for 9-Hole or more Ocarinas. I'm not really sure where to get the music, but if you go to You-Tube And look up how to play Zelda's Lullaby look at the one by "HeathersOcarina" It should have a Link in the Description to go to how to play it.
As the circular metal sheet is heated, it expands uniformly in all directions, including the hole. However, since the hole is not a separate entity but simply a void within the metal, it does not grow smaller or larger. The hole appears to change size relative to the expanding metal because of the way our eyes perceive the interaction between the sheet and the hole.
If you check out the forums at theocarinanetwork.com they have some tabs. They could also point you in the right direction if they don't have what you want.