Rogue
At home in the shadows and skilled at disappearing from sight, the Rogues of Azeroth are most comfortable when acting in the background. Twisting events to their favor, striking only when advantage is greatest: this is where a Rogue excels. With their cunning tricks, physical abilities, and mastery of concealment and disguise, Rogues have no trouble finding employment as thieves, cutthroats, spies, and assassins.
The Rogue is a very involved and fun class to play. Your effectiveness depends on how well you learn to use the Rogue. There is a lot to take in, but players can master the Rogue with knowledge and experience. Here are a few sample skills available to Rogues.
Leveling guide
Level 1-9 - Your role is pretty much as a light tank. Stealth works very poorly with mobs even one level above you. You will do large amounts of damage in short periods of time however and will be fine. If you manage to get adds you should quickly consider running.
At these levels, Sinister Strike is a Rogues bread and butter skill. Evisceration is the only 'finishing' attack that is available in this level range. Backstab is another useful skill while grouping when another player has the mobs attention. Gouge and Evasion become available in this level range.
The key to success as a low level Rogue will be your weapon. Rogues start out with training in Daggers. In order to train more weapons you must visit a major city and spend 10 silver to learn the new weapon skill. It is suggested that you just stick with daggers for the first 10 levels. Following is a list of low level easily obtainable daggers:
Thottbot lists 22 daggers between the levels of 1 and 9. 3 are available from vendors, 1 craftable, 6 are quest rewards, 11 are random drops and 3 have no documented source. Of the 22, 9 are listed as green items, 2 are grey items and the rest are all yellow items. 8 Daggers are discussed below.
The Copper Dagger is a craftable dagger that can be used at level 6. It has a 5DPS capability.
For the Horde the Jagged Dagger is a very good quest reward for a level 8 quest. +1 Str and 6 DPS.
The Ceremonial Knife is another Horde quest reward that could prove to be useful, if not as good as the jagged dagger. 5.4 DPS with no stat bonuses. This is the reward from a level 12 quest that is the 4th in a quest line.
The Pruning Knife is the first questable dagger available to Night Elves on Teldrassil. It is a 4.1DPS weapon from a quest that is first available at level 6.
The Long Bayonette is available through a quest in Elwynn Forest at level 7. It provides 4.4 DPS to its user.
For random drops the Carving Knife is fairly common and nice for a level 6 item. It provides +1 Str and 5.9 DPS for level 6. The Curved Dagger is a nice drop for a level 9 dagger. It provides +1 Agi and 7.2 DPS. It should be fairly easy to obtain in Ragefire Chasm.
The Stonesplinter Dagger is a random drop from Troggs in Loch Modan. It provides +1 Agi and 7DPS at level 8 or higher.
In summary go with whatever drops until level 6. At this point try to get a crafted Copper Dagger. Try to get a Carving Knife or a Curved Dagger as you level. If you are Horde, getting the Jagged Dagger is a very good idea. If starting as a Gnome/Dwarf a Stonesplinter Dagger makes a nice alternative if it can be found.
Level 10-19
The Blade of Cunning is widely available from a variety of quests at level 10 for the Alliance and level 13 for the Horde. This dagger improves your Subtlety skill by one and does 6.7 DPS. The appropriate quest can be obtained from the Rogue Trainer in the race specific level 1-10 areas.