The Nether
Yes. You can find Nerherrack burning naturally no problem in the Nether. There's a ton of buring netherrack there. Minecraft is Awesome :D
Yes, in the Nether Zombie Pigmen spawn on the netherrack but I don't think they spawn on Netherrack in the Overworld.
There's no reason why it should. Netherrack ignites when fire is used on it, 'charge' from levers or redstone circuitry does not ignite it.
Netherrack can't be crafted into anything, but because mining it is so fast, it makes it an easy to use material for scaffolding while building other things.
Yes. Unless you put it out.
The nether's unique blocks are: Netherrack, Nether Brick (including steps), Nether Fence, Glowstone, Soul Sand.
get a nether portal and use netherrack
Umm, if you mean nether bricks then you will have to use a nether reactor. While using it you will be encased in netherrack which you can mine then smelt to turn in to nether brick items, then craft them like normal bricks. If you have recently used it then just mine the netherrack. If you have used it prior to 0.6.0, then it makes obsidian not netherrack and you will have to use it again
No but you can get zombie pigmen, netherrack or glowstone with a nether reactor
Sounds like you are not naturally lubricated and aroused enough.
No, diamond ore is only found in the regular world. The only blocks you will find in the Nether include netherrack, glow stone, lava, soul sand, flint, cooked porkchop, and gunpowder.
You can use Flint and Steel. Remember though that while Netherrack is flammable and burns constantly, the fire from it will not spread to neighbouring Netherrack, nor does lava ignite it. You'd have to use Flint and Steel on each individually.