How can you recover strain? I know you can spend advantages and take a period of rest, but how much strain do these methods recover? Thanks

After every encounter (read: combat), everyone rolls either discipline or cool and regains strain equal to successes.

On combat checks, you can spend advantage to regain 1 strain per advantage spent that way.

When doing a Medicine check on someone, advantage can be spent to cause them to recover strain 1:1.

Resting overnight completely recovers strain.

There's also talents that help recover strain. The Politico has the Inspiring Rhetoric talent to help his allies recover strain, and he can spend a destiny point to recover his own with Intense Presence.

When I first read this it struck me as underwhelming, but he can do this as often as he likes, as long as he has tokens to flip. Capturing a politico alive is harder than it looks.

The Search function is your ally! Go here, young Padawan: http://community.fantasyflightgames.com/index.php?/topic/126370-recovering-from-strain-during-combat/#entry1322306

Also, if you're starting a session of play, a good rule of thumb is to wipe the slate clean on strain for all your players, even if you ended on a cliffhanger.