The first quest in the game that you are given; to escape Helgen
Unbound
This Nord archer is widely considered a top-tier potential partner, so long as you don't mind the wet dog smell
Aela the Huntress
These ruins are where the Golden Claw can be found
Bleak Falls Barrow
This unsuspecting dog is the only one that can speak to you outside of Falkreath, and leads you to find his Daedric master
Barbas
This dragon known as "The World-Eater" is who the Dragonborn defeats in Sovengard
Alduin "Destroyer Devour Master"
To return the Golden Claw to Lucan Valerius at the Riverwood Trader
The Golden Claw
This sister to the owner of the Riverwood Trader is a fine choice, so long as you win-out against her other two admirers
Camilla Valerius
The largest of all ancient ruins, this place is home to the Staff of Magnus and can house all Dragon Priest Masks in the central barrow Bromjunaar Sanctuary
Labyrinthian
This dog tragically lost his master to Rockjoint, and leads you to his dead body in a small simple shack named after him
Meeko
This is the leader of the Greybeards
Paarthurnax "Ambition Overlord Cruelty"
Defeat and kill Alduin
Dragonslayer
This dark elf is best known for tasking you with one of the most difficult and dangerous quests in all of Skyrim; sending you down to Blackreach to collect 30 Crimson Nirnroot so she may grow it
Avrusa Sarethi
You are sent with Farkas to these ruins to find a piece of Wuuthrad, where you discover the truth of the Companions Circle being able to turn into Werewolves
Dustman's Cairn
This War Dog can be purchased at the Markarth Stables from Banning for 500 gold
Vigilance
This dragon is the one that you capture and set free in Whiterun so he may fly you to Skuldafn Temple. You do so by Shouting his name.
Odahviing "Snow Hunter Wing"
Becoming a Nightingale and Speaking to Nocturnal
Darkness Returns
Whether you've drunkingly found yourself here after being challenged to a drinking game, or you went on a religious quest to find the future Sybil of Dibella, you may find yourself in the Temple of Dibella in Markarth. Once you've gained favor from the Priestess', you can marry one of them. Name at least one of the three pristess' that you can marry
Anwen, Orla, and/or Senna
This is where the Greybeards send the Dragonborn to retrieve the Horn of Jurgen Windcaller
Ustengrav
These armored Huskies can be purchased at Fort Dawnguard from Gunmar. Name at least one of them
Bran and/or Sceolang
This is the first dragon that you kill at the Western Watchtower
Mirmulnir "Loyal Mortal Eater"
Recovering all 24 Unusual Gems and bringing them to an appraiser
No Stone Unturned
This prized bachelorette is the only female Argonian that you can marry, and she is found working hard at the Windhelm docks
Shahvee
These ruins are where both Imperial and Stormcloak forces are racing to find the Jagged Crown
Korvanjund
If you choose instead to join the vampires, then at Castle Volkihar you can have one of two Death Hounds instead. Name at least one of them
Garmr and/or CuSith
This dragon is raised from the dead by Alduin, which you and Delphine must defeat at Kynesgrove
Sahloknir "Phantom Sky Hunt"