Besides those advice,

Things that you should know are mechanics of the mob,
how they attack, how to position them and such.

and I agree with the poster above, flash twice and cycle on your mobs
say Initial target -> FB -> SB -> RoH then next target FB -> SB (tab to target 3) and land RoH -> back to initial Target and do one combo, so on so forth (up to you)

pay Attention to your party list where the aggro meter is located and the mob list for a quick reference on enmity of your pull.

Goodluck and please keep learning your class, don't be the bad tanks I run with lol