This guide aims to provide travelers with comprehensive and up-to-date information for exploring California, offering insights into its diverse landscapes, cities, and attractions. Written by experienced travelers, it emphasizes experiencing the state like a local, with practical advice on itineraries, pricing, and hidden gems. The book serves as a resource for planning trips of varying budgets and interests, covering everything from urban exploration to natural wonders.

As part of America's bestselling travel series, Frommer's California 2009 is positioned as an authoritative guide for independent travelers. The series is known for its outspoken opinions and detailed practical advice, suggesting this edition offers reliable recommendations for experiencing California. Its annual updates and inclusion of maps and color sections indicate a commitment to providing current and useful information for trip planning.