What should you do to be prepared to Raid/Arena/PvP?
1) IMHO, the very most important single thing you should be prepared to do is communicate effectively and clearly and politely. Some people won't always get it, but most will. If you need to sit between pulls for mana let someone know. It never hurts to speak up and in a worst case scenario you can always look yourself in the mirror and say that it wasn't for lack of effort on your part.
2) You should be familiar with YOUR class and YOUR playstyle and seek to optimize your 'uptime' healing, damage dealing, tanking...simple right? For some, yes. For some, it means time spent at the training dummy...a lot of time...I think I got married to one under common law, in fact. It can be tedious, but worthwhile. Also, the class/newbie forums are a great place to seek advice as well!
3) There are, in my opinion, two, maybe three things you should have in your bags at ALL times. Flasks, food, pots. the FFP's. Mostly you'll have food and pots at lower levels..mostly pots, but flasks are definitly important as well. Some of the higher level cooks will also bring feasts to share with the entire raid/party.
4) Should you bring enough to share? It's hard to do so in LFD/LFR/Cross Realm BG's because of not being able to share non-conjured items but as far as food/soulwells go, never hesitate to put one down. It will earn you the good will of the group, I promise.
Huggywuggles, Azeroth's most fearsome and terrifying Gnome Arms Forum MVP
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