Quest Stages - C00 (Take Up Arms)

10 Speak to Kodlak Whitemane
If I want to become a member of the Companions, I have to speak to their leader, Kodlak Whitemane, in Whiterun.
20 Train with Vilkas
The legendary warrior band of Whiterun, the Companions have agreed to let me join them, if I can handle some preliminary tasks for them.
30 Give Vilkas's sword to Eorlund
40 Bring Aela her shield
50 Follow Farkas to your quarters
100 I have joined the Companions, the legendary warrior band of Whiterun.