Watching a guide before doing the dungeon is no fun (I have yet to do Coil because I didn't have time for it at launch and didn't have the gear for it after I came back like the OP.) But I don't want to be carried through it either, so it's like... hmm do I wait for a PUG group and hope for people who aren't trolls? For the sake of not having people whine I'll skim over a guide to know how many phases the boss has. Games aren't meant to be played with walkthroughs/guides. You use them only after failing to find your own solution.
You learn more from other players saying how they want to tackle the monsters/boss. People are still failing to use the the Rogue/Ninja "Hide" to trigger things/get chests and avoid dungeon trash.