Raid Video/Walkthrough

Does anyone have recommended links or videos on the raid? I'm particularly looking for something "support role" related. Last night I was barely able to listen in and I died the first 4 or 5 times because I wasn't sure how to best avoid the exploding Harpies. Additionally, when we were DPS'ing the boss when the team returned from the gate, there were still Harpies up and that didn't feel right. Lastly, primary ammo was a problem for me, but I expect for others as well. The Harpies were dropping ammo, but there likely is a strategy to stay up with the ammo. I'm looking to be a little bit more prepared next time (and less of a burden). Be interested to try again tonight, but I won't be able to stay on as late.