Help with Wrath!

Hey, I've done wrath on my hunter before. I don't know if it's unfair of me to post a topic because it says first timers, but I'm extremely nervous about attempting a different character (Titan lvl 398) with any serious group and would really appreciate some helping hands on how to use my class as best I can in wrath. I've also never done heroic before! Anyone friendly and patient and down to help out a nervous wreck, feel free to join! Haha No mic required, but people hoping to help out would probably prefer one! I Sherpa king's fall on the side, it's easily my favorite raid but wrath was so fun the first time I did it and I'd love to give it another go in a relaxed but fun environment.