I am a new Night Elf Warrior who has just made level 20. Now, how do I learn to Dual Wield? It isn't at the warrior trainers I have visited (so far ). Is it a quest? And if it is how do I start it?
Find a Warrior Trainer, and go to the little drop down tab on the top right of the window, and make it so you can only see the available upgrades (greens). If you are lvl 20 and Dual-Wield is not there, it means you've already learned it. If that's the case, then look in your Genereal Skills tab and find the Dual-Wield skill there.
When I learned dual Wield I think I learned it from the warrior trainer in goldshire at lvl 20. So yea lvl 20 should be the right lvl too learn it. Just like the above people said just check the warrior trainers in different areas until you find it.