There are lots of good books. My suggestion would be to visit the Adobe Lightroom site and start looking at the many instructional videos that are for free. That will give you a jump start. Then start considering a book. The Kelby book is good. I just bought the Adobe Photoshop Lightroom 4 Book by Martin Evening. I just started reading it and it looks pretty good. Good luck. You will like the program.
I just recently installed Lightroom 4 after using Capture NX2 for years. I also bought the Scott Kelby book and can recommend it for a good basic introduction to get you up and running. That being said, I just ordered the Martin Evening book which I believe goes into more detail which is what I am looking for.
I can recommend the Martin Evening LR4 book. Within the 679 pages you'll find loads of information, tips, notes, examples of what to do or not do. He takes you from first steps to last steps in a very informative manner. LR also has "Learn LR4/adobe tv" and "Getting started with LR4" instructional series that are very helpful. Good luck.
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