I've train that miningthing for 9 brons but I can't do the mining how to do?????

You need to have a bar of copper and a bar of tin or smelt bronze won't show up at the forge.

i agree :)

if you're alliance can you summon horde?

I think the real question is that even though you have paid the money, and have trained, you are unable to mine ore.  If I'm wrong, just ignore this.  Once you have trained, you have to buy a mining pick.  Just keep the pick in your backpack.  When you come upon a node, right click it, and you'll mine it.  Keep licking until the pick cursor goes away, and the node disappears (1-4) times. 

where is the best place to mine copper, tin, silver.  level 40+