You mine it from redstone ore.
You have to mine redstone ore.
You can mine redstone with an Iron, Gold or Diamond pickaxe.
Redstone makes the potion last longer when you drink it.
Yes, I tend to find diamonds near redstone
OF COURSE NOT! Redstone dust, redstone torch, pistons, and sticky pistons don't exist in minecraft!
Yes, devices like pistons, dispensors, redstone circuitry, all work the same in creative as they do in survival.
You need pistons, iron bars and redstone circuits. Check on Youtube in the related link.
You mine it from redstone ore.
You need an iron pickaxe to get redstone in Minecraft.
You get redstone dust and place it on the ground or a block. You can't put redstone wire on walls or roofs.
You have to mine redstone ore.
Yes, redstone can activate any type of door in minecraft :)
As of 06/29/14, there are no Redstone Blocks in the PS3 version of Minecraft.
Redstone Blocks now exist in Minecraft 1.5. You can make them by combining nine redstone dust on the crafting table.
You can mine redstone with an Iron, Gold or Diamond pickaxe.
Redstone Ore veins are found below layer 16. veins are most common on layer 8. There are 25 ores per chunk on average.Sources: Redstone Ore - Minecraft WikiOre - Minecraft Wiki