World of Warcraft: Level Perks

Level 5:

You get to learn a profession of your choice.

Level 10:

Here you get a talent tree specfic to your class. There are three different builds, and every level you get to spend a new talent point. Warsong gulch, your first battleground, is now available. You can also move onto the next leveling zone. Can now learn the next rank of your profession providing you have enough skill points in that profession

Level 15:

Unlocks tier 2 of your talent tree, unless you have been mixing your talent points between builds.

Level 20:

Until very recenly, you would go mountless until level 30, and before that, 40. Now, at level 20 you can learn the apprentice riding skill for some gold, and buy a mount that moves 60% faster. Also unlocks tier 3 of your talent tree, unless you have been mixing talent points between builds. Arathi Basin battleground is now open. Batteground level ranges increases.

Level 25:

Unlocks another tier of your talent tree, unless you have been mixing points between builds.

Level 30:

Unlocks another tier of your talent tree, unless you have been mixing points between builds. Batteground level ranges increases.

Level 35:

Unlocks another tier of your talent tree, unless you have been mixing points between builds. Unlocks another rank of your profession.

Level 40:

Some classes can now go to a trainer and learn how to wear Platemail, or mail armor. Unlocks another tier of your talent tree, unless you have been mixing points between builds. Also for some gold you can now buy a new rank of your riding skill, and ride mounts that go 100% faster than normal. Batteground level ranges increases.

Level 45:

Unlocks another tier of your talent tree, unless you have been mixing points between builds.

Level 50:

Unlocks another tier of your talent tree, unless you have been mixing points between builds. Batteground level ranges increases.

Level 51:

Alterac Valley Battlegrounds opens up.

Level 55:

Unlocks another tier of your talent tree, unless you have been mixing points between builds. You can now make a Death Knight, providing you have the Wrath of the Lich king expansion installed.

Level 58:

The Outlands are open, and you can enter them providing you have The Burning Crusade expansion installed.

Level 60:

Unlocks the final tier of your talent tree, unless you have been mixing points between builds. Batteground level ranges increases. Final level if you do not have the Burning Crusade. If you do, you will now be able to purchse new skills every level instead of every 2 levels. Can now advance in your professions.

Level 68:

Quests in Northrend open up if you have the Wrath of the Lich King installed.

Level 70:

You can now buy flying mounts and training to fly them. Only flyable in the Outlands, and in Northrend ( if you have cold flying training ). Final level for those without the Wrath of the Lich King expansion installed. The Isle of Quel Danas, a level 70 island with many daily quests, is now open.

Level 78:

The Argent Dawn Tournament in Northrend is now open.

Level 80:

Final level currently. Do I need to list all the perks?