You watch the IGN coverage here: http://www.ign.com/events/e3/2011/live-video
As for G4, you need a TV.
Ah okay, don't have a TV that have such channels so that's too bad for me then.
So.. june 6: http://www.gametrailers.com/netstorage/e3/e3-live.html 2:00PM EST
June 8: http://www.ign.com/events/e3/2011/live-video 3:40PM EST
Anything else other than that G4 thing that I have missed? What is shown on G4, can I watch that somewhere else as well?