Downloadable manual

Hi I have looked on the Unity website and there is a online manual, im just wondering is there a downloadable version that I can download and peruse at my leisure with a ebook reader?

The online manual is always the most accurate and most up-to-date version. However when you install Unity the offline version for your specific Unity version is installed along with Unity:

%%UnityInstallPath%%/Editor/Data/Documentation/Documentation.html

The new location on Windows is:
file:///C:/Program%20Files/Unity/Editor/Data/Documentation/en/Manual/index.html