If you want to get into raiding, it's pretty simple.
  1. Open Party Finder.
  2. Go to the High-End tab.
  3. Join a [Practice] party.
  4. Congrats, you are a raider now.
Extremes are a pretty good start.

Although we could use more tools to vet people joining parties, such as beating (Stone, Sky, Sea) or having seen up to a certain % with everyone alive, we do have some good ones.
  • Set a minimum item level. There is no excuse to be below 610 (the crafted gear item level). Being 621 or higher means you have raid gear.
  • Set [Duty Complete] so they must have cleared before joining.
  • Check their gear, melds and buffs for food.