How do I progress Farkas' companion story line?

You need to complete the Entire Companion questline to get him as a Marriage option, these include:

If the quest is bugged it can have a plethora of reasons(mainly due to the repeatable quests).

Options are:

Sleep for a day or 2, it might fix itself
save, attack the companions and then either sheave your weapon or reload and it might reset.
Some quests are wrongfully categorizes, some other miscellaneous quests might block it and need to be completed first
Try everybody there might be a single one that does give a job but think u already tried that.
Bounties might cause the issue, try paying them al off or getting one and then paying it off

IF that doesn't work your last option is using console commands.

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