I'm a tank...but I think I may suck

[Talianore]

I play on a PC and keybound the number marks by dragging them to the action bar. I also made Provoke a mouseover, so that I didn't have to drop my current target until the loose mob is within punching distance. I'm not the best tank or the fastest, but these little things made my job so much easier.

[Ebonwings]

Well keeping aggro on WAR is bit challenging because TP is everything for a WAR. Let assume that you are using the optimum gear at lv 40 range. The best advice I can give is to Tomahawk, overpower x2, heavy swing, skull sunder (2nd target), butcher's block (3rd target),the point is to alternate your enmity combo amongst all targets. If you are not sure if you hold aggro or not just use Overpower. At lv45 you get Steel Cyclone. So you start with Infuriate, Steel Cyclone, Overpower, the rest are focus on building gauge in order to Steel cyclone or use inner beast. Hope this help in a way .

[Underlord]

When you pull a mob and more follow, as they run to you hit the first one with overpower. This should hit all the mobs following. Also as for role actions, the ones you put in the bar at bottom first you get at earlier levels. So make sure you have provoke and ultimatum in first spots.