New Zealand fishing guide Tony Bishop is offering his book "Fishing Smarter for Trout" to read for free via his website: "Fish with Bish in New Zealand". However, purists be warned:
The book is aimed primarily at new fly fishers, but it does seemed to been read by many better than novice fishers. But be warned if you are a purist, save yourself a heart attack, and count your dry flies instead :)
Be sure to visit his Blog "Bish on Fish" in between chapters.