"A Naturalist's Guide to the Galápagos Islands, the 2nd Edition” is an informative book by Steve Rosenberg with detailed descriptions of all of the most popular visitation sites in Galápagos as well as lots of practical advice for planning a trip to the Galápagos. This is a must have for anyone who is planning to travel to the Galápagos and for those who already have. The First Edition was published in June 2014. This Second Edition is AVAILABLE September 6, 2014.
Free and useful
A Naturalist Guide to the Galapagos Islands – second edition by Steve Rosenberg
Excellent book. Will use in conjunction with my specific trip intenarary with National Geographic.