Right off the bat, this looks like a good one: http://seamstressofavalon.blogspot.com/2009/04/edwardian-hair-tutorial.html. I haven’t tried it, but the tutorial looks easy and it’s the time period you’re looking for: 1911-1914.
I would suggest looking around youtube. There are tons of tutorial vids for Edwardian era hairstyles. There are lots of Gibson Girl ones, but I don’t think that’s what you’re looking for.
For example, here’s a ‘Titanic inspired’ one: http://www.youtube.com/watch?v=GXiHO4Vs_Sk
Hope this was some help. Good luck!
Scanned from Manual of Ladies Hairdressing for Students (1899).