We are planning a trip to Yellowstone or the Grand Canyon Park in the near future and these books by lonely planet are invaluable at saving time and money in helping plan for the perfect vacation experience. While it is true you could find some of the information that is in these books online it would take days and days of research if not weeks to compile it and then edit what is factual and what is not helpful at all. The lonely planet people have been there and know what they are doing and know what you are looking for and how to help you find what you are looking for even if you dont have a clue what you are looking for at the moment.Filled with great pictures and suggestions on places to stay and where to eat. Outlines tons of things to do and places to see with reviews from experts.Get the book and make a plan. Life is waiting.