A lot of that is solid advice. However, idk if 3 and 4 in Claire's post are good advice in general.

It doesn't matter much in dungeons, since they tend to be really easy anyway, but you don't usually want to pop a CD at the start of a fight. It's also not really intuitive at first when you should use one; this is mostly a learning process and you pick up certain cues from common enemy themes, group dynamics, and situational aspects.

I personally, as a warrior, use CDs for either mid big pull, an attack I know will hurt, or (and this is WAR specific) for DPS. I do understand this wasn't really addressing more 'advanced' aspects, but I want to clarify the tanks defensive rotation is fairly dynamic. This rotation is probably the most vital component to becoming a good tank.

Just takes experience to learn when to use the defense buffs; no silver bullet. Also, healing a little bit will help you understand tanking a little better imo.

Happy tanking, friend