I am a level 21 gnome mage with my engineering up to level 240. Unfortunately I cannot up my skill in engineering unless I level up to level 30 or 35, I'm not sure which since I have seen several conflicting posts about this. But my idea is for Blizzard not to make a level requirement (character level) to specialize in a tradeskill. If we can get to the area we need to reach the Trainer, then we should be able to train.
PLEASE BLIZZARD? Some of us do our tradeskilling on our alts so we don't overwhelm our inventory slots on our main characters. I see nothing wrong with this.....=)