You don't
There are no diamond picks in Minecraft PE.
There already is crafting
Yes you can. Just get an diamond ore and place it in you crafting box and diamond will be made. Then craft your pickaxe.
Probably not.
By crafting a flint and steel
By crafting 4 sand and 5 gunpowder with a crafting table
it is jpgaming.
The pocket edition of minecraft doesnt have crafting, therefore doesnt need one. Its a crafting table btw.
In pocket edition you'll need iron, gold or a diamond pickaxe.
For iphones and ipads and ipods you can try minecraft pocket edition lite or you can get minecraft pocket edition for $7.49 i think. If u want crafting quides i recommend minecraft explorer pro or lite, the pro bersion is $1.19, i hope this helped.
an iron pickaxe will do.
Yes there is signs in Minecraft Pocket edition