Useful Console Commands:

[Envy]

/afk - You get a "AFK" tag (away from keyboard), if you add additional text behind /afk it will be sent to those whispering you.
/dnd - You get a "DND" tag (do not disturb), same as in /afk if you add additional text.
/played - Shows your total played time on that character. Also shows how long you've been on the level you're on.
/ins - Inspects your curret player target.
/trade - Opens trade with your curret player target.
/logout - Logs you out to the character selection page.
/follow - Automaticly follows your target
/roll - Rolls a random number from 1 to 100. If you add minimum and maximum number it will roll between those.
/inv "name" - Invites the said player to a group.

Chat related
/s - Allows you to chat with those in your vicinity.
/y - A yell command, throws what you write to all in a large area.
/r - Replys to your latest whisper
/w "name" - Whispers the said player.
/p - Allows you to chat in party chat.
/g - Allows you to chat in guild chat.
/o - Allows you to chat in officer chat (must be assigned by Guild Master).
/e - Allows you to write a emote.
/ra - Allows you to chat in raid chat.
/bg - Allows you to chat in Battleground chat.
/rw - Allows you to use Raid Warning (needs raid leader, assistant or party leader rank).
/1 - This is generaly General Chat. It's a chat that allows you to chat with everyone in your curret zone.
/2 - This is generaly Trade Chat. This channel is used for everything related to trading, buy and sell. Only usable in a city.
/3 - This is generaly Local Defence. This channel is used for reporting enemy player sightings.
/4 - This is generaly Looking for Group channel. This channel is joined by queing up for a instance, raid, quest or similar in the LFG tab. Used for advetising yourself for a group or to find more members for your group.
/5 - Typically used to access the Guild Recruitment channel. This channel only appears in cities and only if you are not in a guild. Joining a guild automatically removes you from the channel and frees up a channel slot but you can rejoin it afterwards for recruiting new members.
/join "channel name" - Joins the said channel. Some require passwords. The number to use to chat in this channel depends on how many other channels you are in.
/leave "channel name or number" - Leaves the said channel.
/chatlist - Lists all channels you are a member of and their assigned numbers. Add the number of the channel on the end to see who is in the channel. Example: /chatlist 1 lists everyone in the general channel in your chat box.
/chatwho <channel> - Shows a list of people in the channel.

/ignore "name" - Ignores that player
/friend "name" - Adds that player to your friends list

Guild related
/gremove "name" - Kicks said player from the guild.
/gdisband - Disbands your guild (need to be guild master to use).
/gquit - Command for leaving your guild.
/ginvite "name" - Invites a player to join your guild.
/gleader "name" - Makes that player the new Guild Master (must be Guild Master to use)
/gmotd "message" - Changes the Guild Message of the Day.
/gpromote "name" - Promotes a player in your guild
/gdemote "name" - Demotes a player in your guild.
/ginfo - Gives basic information about your guild.

Combat Related
/a - Targets your curret targets target.
/tar "name" - targets the named target.
/combatlog - Toggles writing of the combat log
/focus - Focuses your curret target, often used in combination with macros
/cast "skill/spell name" - uses/casts the said spell/skill
/readycheck - Does a ready check on your party/raid to see if they're ready.

PvP related
/pvp - Disables or enables PvP in friendly zones.
/duel - Challenges the targeted player to a duel.
/yield - Cancels a duel curretly in progress.
/teamquit [2v2, 3v3, 5v5] - Leave Arena Team
/teamdisband [2v2, 3v3, 5v5] - Disband Arena Team
/teaminvite [2v2, 3v3, 5v5] [player] - Invite [player] to your Arena Team
/teamcaptain [2v2, 3v3, 5v5] [player] - Sets new team leader

Misc
/console reloadui - Reloads your UI. Useful if it bugs.
/console pitchlimit 90 - (In degrees) Allows your character to look/fly straight up/down (default is 75)</channel>