I only know one potion that the nether wart can make but I'm not sure what the other ingredient is (I only play lite version of minecraft, but I watch skydoesminecraft and I KNOW there is this potion) It's the fire-resistant potion, however you spell it 0.0
You can't craft them, you have to mine them from Nether Fortresses.
You build a portal out of 14 obsidian
you cant
Over a hundred. There are a lot.
Mine Nether Quartz, then on your character's own crafting slot, put a piece of Nether Quartz in each, to craft them into one Quartz Block.
you cant only on computer or xbox.
its called the nether but its on the pc and xbox version too
ghast look like full grown slimes but with tentecals underneath and can fly in the nether they shoot firecharges at you too. < only in nether unless spawned>
You can make a portal to the nether on minecraft with 10 obsidian arranged like this in a space somewhere: O=Obsidian E= Empty EOOE OEEO OEEO OEEO EOOE You can also get mods where there are more portals
You can make a Nether Portal. Put the Obsidian in a 4x6 vertically with a 2x3 hole in it. Using Flint and Steel or a Fire Charge, right click on the bottom Obsidian.
You don't make it, you mine it.
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