Orcs -- condensed wowpedia information

[Gnash]

We all forget some parts of our lore from time to time, and I thought it would be handy to have a summary of links on that occasion you just can't remember what happened to Thrall after he escaped Durnhold Keep.

General information

Summary of orcish culture and history
Draenor
Burning Legion
Outland
The Dark Portal
Warchief
Blood of Mannoroth
First War
Second War
Internment camps
Lich King
Scourge
Third War
Durotar
Nagrand
Oshu'gun
Kosh’harg celebration
Om'riggor

The orcish Hordes

History of the Horde
The Dark Horde (lead by Rend Blackhand [deceased])
The Fel Horde (lead by Kargath Bladefist [deceased])
The New Horde (lead by Garrosh Hellscream)

Notable clans

Frostwolf Clan
Warsong Clan
Mok'nathal Clan
Dragonmaw Clan
Blackrock Clan
Shattered Hand Clan
Bleeding Hollow Clan
Bonechewer Clan
Black Tooth Grin Clan
Shadowmoon Clan
Burning Blade Clan
Thunderlord Clan
Stormreaver Clan
Laughing Skull Clan
Twilight's Hammer Clan
Rageroar Clan

Notable organizations

Sythegore Arm
Kor'kron Guard
The Mag'har
Horde Expedition
Orcs of the Red Blade

Notable characters of orcish descent

Durotan [deceased]
Drek'thar
Thrall
Orgrim Doomhammer [deceased]
Blackhand the Destroyer [deceased]
Rend Blackhand [deceased]
Grom Hellscream [deceased]
Garrosh Hellscream
Rexxar (half-orc)
Garona Half-orcen (not surprisingly; half-orc)
Kilrogg Deadeye [deceased]
Varok Saurfang
Dranosh Saurfang [deceased]
Ner'zhul [deceased-but-kinda-alive-in-a-freaky-kind-of-way]
Gul'dan [deceased]
Kargath Bladefist [deceased]
Eitrigg
Broxigar [deceased]
Greatmother Geyah
Nazgrel

Notable strongholds

Orgrimmar (capital)
Hammerfall
Garadar
Hellfire Citadel
Warsong Hold

[Vezara]

Uh, dosen't Greatmother Geyah say in the end of her quest chain that she is dying..? And that was like.. a few years ago? Just thought i'd mention it

[Rargnasha]

She was still 'dying' in the novel, The Shattering.