Keystroke: t from Help menu.
Note: You will require an Internet connection for this feature to work.
When you select this option, you will be directed to a special web site which will allow you to select a language of your choice. Click on the appropriate flag.
You will then be presented with a similar structure to the Help system you are viewing now, and will be able to browse the system in your chosen language.
Please however be aware that the translation is done by a web based computer program and therefore cannot be assumed to be 100% accurate.