A few basics

[Sir Smeg]

I'm sure you all know how to survive in the world of Guild Wars, but there are always ways to fine-tune your playing and fool people into thinking you're a true veteran

Firstly; "Calling".
Hold down the 'ctrl' key while you're performing any action, and all players in your current party will be informed of your intents. For example, holding ctrl while double clicking on a player will tell the party you're following that player: A message will come up saying 'I'm Following *Player's Name*'
Or holding ctrl when you press 1-8 will tell your party what skill you're using on the monster you have targetted. Additionally, a blip will appear on the mini map along with a 'ping' sound over the monster you are attacking. For instance 'I'm Using Pacifism on *Big Beefy Moron*'

Now a style point. All of you are familiar with the emotes: /dance, /yawn, /highfive etc. But did you know that if you include a space and an asterisk after typing any one of them, you will perform the action at exactly the same time as any other player(s) nearby who have typed the same thing in the past few seconds.
For instance '/dance *' will make you start dancing at EXACTLY the same time as anyone else who typed '/dance *'
Synchronised dances serve no purpose, but look really stylish ^_^ Highfiving another player is also good, if you can get the distance right ;D

I'll add more gameplay tips as I think of them.

[Edem]

Nice idea. Let me add some more...

admin said:

Firstly; "Calling".
Hold down the 'ctrl' key while you're performing any action, and all players in your current party will be informed of your intents. For example, holding ctrl while double clicking on a player will tell the party you're following that player: A message will come up saying 'I'm Following *Player's Name*'

Aditionally, when someone's selected, pressing space will

• attack him, if it's a foe;
  
• talk to him, if it's an NPC
  
• follow him, if it's a player
  
• do nothing, if it's yourself.

About selection:

• Tab selects next foe (or next non-teammate player in towns)
  
• Shift-Tab selects previous one
  
• Alt-Tab will cause GW to be minimized to teh desktop so watch out.
  
• C selects nearest foe
  
• V selects nearest teammate or NPC
  
• T selects next called target,
  
• f selects yourself.

If a spell/skill says "target ally", and you use it on a foe (or noone's selected), you'll use it on yourself. That means, you don't have to select yourself in battle to cast Healing Breeze on you.
Other "callable" things:

• Ctrl-Click on your healthbar calls your actual and max health (My health is 345 of 512)
  
• Ctrl-Click on your energybar calls your actual and max energy (useful for casters to ask regen time)
  
• Ctrl-Click on your XP bar calls your level and the % of XP needed till next level (usually just for boasting)
  
• Ctrl-Click on any of the above while you're dead makes you say "I'm dead." on the team channel.

For instance '/dance *' will make you start dancing at EXACTLY the same time as anyone else who typed '/dance *'

To be more precise: there's an invisible "blip" in every tenth seconds (or so) in the game. Adding " *" will cause your emote to start at the next blip (and it won't appear in the chat also), so you'll start with everyone, who types it between right before the same blip. That means, you can be late with some seconds, except if the others type it right before a blip.
Oh, and a syncronized /goteam can look quite awesome...

Now, a keycombo tip for mostly spellcasters: if you're running low on health, and noone stands behind you, press X R. That makes you face back and run. Saved my life many times... And running away to avoid certain death is not an act of cowardice (but only if you really manage to avoid death, and you don't cause the death of everyone else with your runaway... )

[Sir Smeg]

Most excellent" I didn't know a few of those commands; this section is already working exactly as it should... I must be some kind of genius, or something ^_^

Appropo running away: remember that even though you do run faster while facing forwards, exposing your back to the enemy usually ends up causing you extra pain. Backing away from a fight, though slower, can sometimes mean the difference between life and death...