You might try Jim Zumbo's "Elk Hunting" from the Complete Hunter book series. This book is inexpensive and reasonably comprehensive. The cost is about $16 from Amazon.com. You will need to reconstitute the following URL in yoru browser address line or just go to www.amazon.com and search on Jim Zumbo.

http://www.amazon.com/Elk-Hunting-Complete/dp/0865731268/sr=1-1/qid=1156944142/ref=pd_bbs_1/103-4673383-5123004?ie=UTF8&s=books

There are, of course, plenty of other elk books. I have four books specifically on elk hunting and other books that contain chapters on elk hunting. There is a lot of elk hunting literature, and it doesn't hurt to read as much as you can. I find that a large part of theliterature is directed to the peripheral issues -- appropriate clothing, appropriate weapons, how to measure a bull's rack, how to field dress and quarter an elk, what states to hunt in, how to set up an elk hunting camp, physical conditioning -- and frustratingly little about the boots on the ground, rifle in hand, permit in the pocket hunting of elk part of the enterprise. I will be a first time elk hunter in October (first rifle season Colorado Unit 75), and while I feel I have a handle on the peripheral, logistics issues . .. what I hunger for are more details of the peculiarities, tricks, insights, strategiesof elk hunting itself. But you have to start somewhere. This book is not the worst beginning.