Man I went the video route and it was entertaining as hell, the actual hunt with a bow was nothing like the videos LOL. I did read "All about elk" by Lapinski and Shuh and got some good ideas from that book but they hunt primarily with a bow, Jim Zumbo is a good source if you hunt elk with a rifle.
Check out Elk hunting forum's around the net for info too, but nothing is going to beat actual experience and eventual failure.
The best part of this insanity is getting into elk and getting busted and later back at home/camp figuring what you did wrong and learning what not to do and eventually improving your skills with the pay off being an elk on the ground.
Good luck in your journey