For like 2 to 4 elite mobs this is what you generally do at lower levels:
- Mark a skull if you have lead. If you don't have lead, then ask for it to mark if someone isn't already doing it for you.
- Use a ranged weapon to pull the one in the corner (not the middle).
- Use bloodrage after you have pulled (if it's up) and use demo shout.
- Now give an autoattack to every target once and also put a revenge or sunder on your main target.
- Repeat step 4 while using sunder and revenge based on the rage you have.
- Pull the next one (assuming your healer is ready).
As for single target, just use sunder and revenge. If there is 1 or 2 elites and a few nonelites, prioritize the elites since the dps can probably handle the nonelites anyways (esp a frost mage). Also it's worth noting that it's more rage efficient to use shield block to proc revenge than to just use sunder, but I personally find it better to use sunder at the beginning due to it taking a bit for shield block to proc revenge (and you know that can be a risk with the triggerhappy dps you find in pugs).