Eromort wrote:
Thanks i kind of known that....but how much time? and where should i level it?
Use the Search function on this site, look for Copper Vein, Tin Vein etc. It will give you maps of each zone with vein locations. Having an epic riding mount will help you skill up quickly as you'll need to do circuits around each zone. Also remember that many instances have ore veins, for example Uldaman (iron), Maraudon (mithril) and DM East (2-3 Rich Thorium) all offer mining without competition. Blackrock Depths offers a lot of Dark Iron deposits. You can reset an instance and repeat the mining 5 times per hour.
Also get the +5 Mining enchant on your gloves, this will help you greatly in the transition between each ore category. Without it you tend to end up either doing a lot of mining on 'green' veins which rarely give a skill up or having to look for rare minerals (silver, gold, truesilver).
When you hit 300 mining go to Outlands and unlock the next level of mining. However you do not need to stay in Outlands and skill up on Fel Iron, you can continue skilling up on Thorium.