Welcome to the forum and the great sport of fly fishing. There is a ton of information on this site, spend some time browsing and using the search function (look carefully and you will also see an advanced search function), but don't hesitate to ask questions. Sorry, I should know the answer to your ebook question but maybe someone else will know the answer.
Here are some other ideas to think about to expand your FF knowledge.
The Orvis Learning Channel has some great videos and other information for new FF, check that out. How To Fly Fish For Trout, Bass & More | Learn Fly Fishing With Orvis
Also Orvis has a podcast done by Tom Rosenbauer that has some great information. You can also download the podcasts to an IPod or IPad and listen to them while at the gym or maybe mowing the lawn.
Fly Fishing Podcasts | Weekly Fly Fishing Podcast Tips | Orvis Fishing Podcasts | Fly Fishing Tips W
YouTube has hundreds of videos on Fly Fishing, Fly Casting, Nymph Fishing, you name it and it is probably there.
Also check with your local fly shop, some shops offer very reasonable beginner classes and also they are a good source of information, like local hatch charts, river access, etc. You might also ask them if there is a local FF club in the area or a TU or Federation of Fly Fishers chapter. The idea being that if you can find a friend that has been FF for a number of years or a mentor in one of the clubs willing to help, your learning curve will steepen immensly.