The "Official Guidebook for Osaka Tourism" is a convenient and useful guidebook provided by the Osaka Convention and Tourism Bureau Foundation. It offers detailed information about Osaka city and Osaka prefecture, divided into different regions. The guidebook includes maps and route diagrams, making it easy for travelers to navigate the city. What's more, it can be accessed offline, allowing users to read and use it even without an internet connection.

One of the key features of this guidebook is the ability to search for routes to tourist attractions. With just a few taps, users can find the best way to reach their desired destinations. However, it is important to note that this feature requires an internet connection.

Please note that the information provided in the guidebook is accurate as of December 2018.