Originally Posted by
Eninya
FR is pretty simple once you get the hang of it. It's also, in a strange way, comparable to how Fury plays, with different timings.
Opener: Charge -> FR (while charging) -> CSmash -> FR -> FR (or Slam+FR, but unlikely to have the rage for both) -> Battle Cry -> 3xFR Mortal Strike -> Slam/FR spam for the duration, hoping CSmsash resets to dump a SD Mortal Strike.
Easy general rotation: 3x FR -> Slam dump until Colossus Smash resets (to proc Shattered Defenses). You never clip Shattered Defenses with a second reset. You always burn them with Mortal Strike or Execute before using Colossus Smash again. Your target should always have Colossus Smash, so if you have the shitty legendary pants you can apply it more often. You can also apply Shattered Defenses with Warbreaker, but it's a long cooldown.
Practice on the dummy starting slow. You can find some great YouTube tutorials breaking it down and demonstrating it slowly (before going to full speed--they helped me, too). It's not complicated to learn and really falls down to comfortable bindings.