How do I update? I'm sorry, I'm just new to this game

Yessir. 0.000 2016-04-30 21:36:24; Factorio 0.12.29 (Build 17931, mac, steam) 0.000 Operating system: Mac OS X 10.11.4 0.000 Program arguments: "/Users/TravisRumsey/Library/Application Support/Steam/steamapps/common/Factorio/factorio.app" 0.000 Read data path: /Users/TravisRumsey/Library/A...

75.408 Info MultiplayerManager.cpp:1059: networkTick(1875635) mapTick(1959828) received stateChanged peerID(0) oldState(InGameWaitingForOthers) newState(InGame) 75.408 Info MultiplayerManager.cpp:1059: networkTick(1875635) mapTick(1959828) received stateChanged peerID(18) oldState(InGameWaitingForOt...