An Introduction to Japanese (日本語)
The Basics of the Japanese Language.
This book is available for download with iBooks on your Mac or iOS device. Multi-touch books can be read with iBooks on your Mac or iOS device. Books with interactive features may work best on an iOS device. iBooks on your Mac requires OS X 10.9 or later.
In "An Introduction to Japanese", you'll be taught the very basics of the Japanese language - for free! You'll learn 2 of the 3 Japanese dialects, as well as some important words.