When does apply thief’s “second-story work” bonus running jump distance?

..Volos guide’s Aasimar take damage when using their racial power?

Does knowing the script of a language let you read any language?

Does a monk need to see an incoming attack to use the deflect missile ability?

If you shove an attacking creature with your readied action, does it cancel the enemy action?

Fiendish Vigor would seem to be a game-breaker