You mine stone with a pickaxe.
By mining stone.
you mine stone with a pickaxe
put down a bed and tap on it
You have to place it on any block, then tap it.
You will have to type in the right seed. Try <nyan>, as it has 2 lava waterfalls right at your spawning point
Try herobrine and dig near the lava or cobblestone you might have to have a capital H
There aren't any mods for the Pocket Edition
you cant have a minecraft pocket edition username
Yes there is signs in Minecraft Pocket edition
As of Pocket Edition 0.3.0, cows have been part of Minecraft Pocket Edition. If you have that version or above, then there should be cows.
No, they are no enderman in Pocket Edition of Minecraft 0.8.1
Yes, there are villages in the updated Minecraft Pocket Edition.