If you’re a new tank and zone into a M+ in an instance you need help on, say so.
“Hi, first time here, let me know if I’m going the wrong way”
Groups are full of all sorts of trivia.
Just be sure you say that before you slot the key.
That’s it. That’s all you need to do. Anyone who doesn’t like it can leave. They can all rear up and tell you to get out or kick you, that’s fine too. NBD.
It’s an organic thing. Don’t take it personally, and just go Tank!
And, yea, finally, do it on your own key. Get a +2 (which can’t go any lower) and grab a group.
Setting expectations of front is the key thing. Don’t surprise them at the first boss saying “Oh, gee I don’t know what to do here”.
If they don’t listen, they don’t listen. If they’re rude idiots, they’re rude idiots. Leave and get a new group.
It’s no big deal. The group assume that SILENT people “know what they’re doing”. If you don’t, tell them.
So, in summary, if you want to learn to tank – go tank, just tell folks you’re learning.
Same goes for healing. Heck same goes for everyone. SPEAK UP!