You can make it out of leather, fire (chain mail)*, Iron, gold, and diamond.
Helmet= Gives .30 efficiency (1 1/2 armor)
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Chestplate= Gives .50 efficiency (4 armor)
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Leggings= Gives .43 efficiency (3 armor)
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Boots= Gives .38 efficiency (1 1/2 armor)
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http://www.minecraftwiki.net/wiki/Crafting- all of the crafting items
*Fire can only be obtained in item form for use in crafting if it is spawned using an editing program, such as Invedit
to make a helmet its like pants but make it smaller w/5 diamond going like a almost fully square
No
You cannot make horse armor in Minecraft. Instead, you need to find it in dungeon chests.
no you can't
Yes you should be able to. Check that your minecraft pe is version 0.6.0 or 0.6.1 If it is either of those then you can make armor and use it
iron diamond gold and leather
There is no way to make zombies wear leather armor, but sometimes zombies can naturally spawn already wearing the armor.
Helmet, chest plate, leggings, and boots.
you dont make cloths you make armor. to get cloths you need a texture pack see link in related links to find armor instructions.
cant do it yet, but in future updates, you probably will
Yes there is armor
there currently isn't armor in minecraft pe but there will be in v0.6.0 which will be released soon
Kill cows. They will drop leather and you can make leather armour.