60 now what?

I have reached the 60 recently with my ret pala. Just fyi. I have no exp. when it comes to Raiding in classic. I understand that I need some % of hit chance boost and that certain quests need to be completed for Raids. But what now? How do I join good raids? Do I first find myself a proper guild or do I have to reach certain dps meter? Do you guys recomment me farming rep for certain factions or run BRD until I get that stupid trinket?

If I understand it right dual spec is possible too so I would like to try the tank spec j4f.

How do you guys handle it at this point?