With the change in classes in the patch today we have all sorts of new stuff to learn. As a PSA I offer the following advice on the spec and classes. A sly review of the classes might be (ahem) useful.
DKst – Essentially there are two types, those you need to listen to because they are Tanking and they help the Mages and Hunters decide who dies first; and the rest. The first are called Blood spec, the second are called whatever you like. When I play my non-tank DK he names used are: “stop tunneling”, “move”, and “deathgrip it you tard!”. Most Dks do not know what DK stands for, but would guess Death correctly because its a leet word. Probably means Death Killerz.
Druids – Too many types, and way too many on the server. Lets face it – everyone has a Druid, and generally only the good ones get taken to raid; that is ex-trees and bears. Cats are misguided Rogues, and Boomkins are Mages who ate too many fish feasts. Get at least one in your raid and make them change spec every 3-4 trash pulls, they love that. Why else play a hybrid?
Hunters – There is only one type, and thankfully they will have no excuse to roll for non-missile weapons after patch 5.0. Handy at times for traps, and hated for the same reason. They perform their best at range, and I find the best range is about 10 miles from the raid team. A quick review of the armory indicates that Int and mana are still issues for some Hunters, so take one to a raid at your own risk.
Mages – Apparently the hardest class in wow to play well in Warcraft. I asked them. There are three types and many sub-types, but all you need to remember is that they can supply a buff and food, although both are rare. Arguments about specs is what keeps the Mage community flowing, and if you want to distract one then either get the Hunter to MD the boss to them before the pull and blame them, or tell them that an alt spec is superior and they need to re-work their toon. Typically awesome dps, and the class colour (blue for the cheap seats) looks wonderful in screenshots which is really all we need to know.
Monks – sorry what? I killed heaps of these things in SM over the years, and yet they keep persisting. As a class they will be uber powerful at everything they try, and will become the new DKs for MoP. This means they will stay awesome through they first two tiers of raiding until we’re meant to get serious about it, then they’ll be nurfed harder than Paladins on patch day and all the Monks will consider rolling back to their paladins. As they are new just assume that every monk can do all things, and yell when they can’t read your mind…you know, like Druids.
Paladins – Almost the definitive hybrid class, as they wear plate so they are less girly than other hybrid classes, but still somehow wear dresses. And no, it’s a dress not a kilt. They are made up of confused Priests which heal, confused Warriors who tank, and confused DKs who stand behind the boss and whine about moving out of the bad. Take one of the first two types to your raid. With the update to buffs we’ll likely see some really cool transmog sets and “roleplaying” in the Deeprun Tram, but very little real Paladins in raids.
Priests – the best healing class in the game with Holy, and the best animation in Shadowform. Shadow pets, shadow powers, shadow spells; see a pattern? A Shadow Priest is just emo enough to compete well with a Warlock, but not enough to re-roll DK. Way too squishy, so smack them first if you have to kill one in a team. Their most irritating feature is that their class colour is white, which makes pasting class notes from websites a two step process (one more step than they deserve). I’m sure there is a petition out there somewhere to make the class colour charcoal, so the SPr will be happy. Oh and I didn’t mention Disc spec as if you do they don’t shut the hell up. Sheesh. Put them on mute.
Rogues – Until the release of the legendary item in late Cataclysm the Rogues had gone on strike and refused to attend raids, generally being replaced by Death Knights and confused Shamans in melee. Maybe they were stealthed? If you like being sneaky and standing behind people then you will like the Rogue class and are also probably a creepy little sod. Who likes that? Makes my skin crawl. They are known for very effective stuns in pvp and for bringing nothing to the raid; ever.
Shaman – Totems are still awesome, and very confusing to non-shamans. Just assume that whatever buff, effect, or spell you need can be supplied by a Shaman and tap them on the head until you get it. Take one along, at worst they have a self res so you can wipe faster the next time. Spec wise they have more choices that is fair given they were a novelty idea in the original beta which was taken too seriously by some horde and would not shut up. Sometimes confused for Mages in screenshots and damage meters; if you see a blue bar that is doing less dps its a Shaman.
Warlocks – Incredible lore and bloody incredible emo whiners. Now I wouldn’t mean to offend, but Warlocks are just so easy to pick on that it is a shame not to. Ask a Warlock what happened post TBC to the class then walk away from the phone. In MoP they have been tweaked and buffed, primarily by updating some animations and spell effects. Very important stuff. Also voted most likely to re-roll Mage when they realise that Warlock rotations are god-awful complex, and Mages have a UI with two buttons. Oh, and they get the succubus pet which has two roles: dps and fap-fap-fap.
Warriors – A Warrior Tank is a god amongst insects in the tanking community. First and last the Warrior will stand with you through every wipe and res, until finally they crack the absolute shits and tell everyone how to play. Often they are right too, as they’ve watched the mistakes so often. A tank’s role is to stand still or walk slowly backward, and the dps try to spin in circles and roll Need on every two handed weapon in the game. They are a simple class for a simpler time, before DKs, Monks, and all the other pixel based distractions which is not old school raids. A Warrior will always be able to complete the sentence, “back in my day…”.
So yes, essentially I am unburdened by too much class knowledge. Enjoy the patch today.
A little while ago the Insidious Guild on Nagrand got THE ULTIMATE CHALLENGE (yes, has to be written in caps, its the ultimate). That means 250 Guild Challenges. Sheesh the boy and girls in Insidious are a busy bunch of achievement 
TyphoonAndrew's - Eye of the Storm 