New Tank here...

[SkyBlueLogan]

Almost forgot, remember flash is free. Use it liberally.

Is it free for Warriors or something? At level 50 it costs me 212 MP and is a mana whore, by far the most expensive ability we have.

[SkyBlueLogan]

To the OP I believe the best advice I can give is put on your big boy pants and make sure to grow some thick skin. Communicate the best you can, and try to ignore the jackasses who bitch, whine, and complain constantly because you're going to get a lot of it if you run dungeons often in random groups. In addition to that, try to weed out the constructive criticism that will be mixed in with the QQ, and be willing to learn from it, because from time to time people do actually offer some helpful info/tips.

[juniglee]

Is it free for Warriors or something? At level 50 it costs me 212 MP and is a mana whore, by far the most expensive ability we have.

It's not entirely free per se, but as a tank, more often than not you are not using MP for anything else. As a Level 46 Paladin, the only skills I have that consumes MP are Flash, Protect, and Cure. In that sense, you have an entire MP bar to spend on Flash.