Basic Mandarin is a handbook.
Basic Mandarin can help you improve your communication between you and Chinese-speaking people,when you can not speek any Chinese.
Such as when you want to say Good Morning to somebody in the morning, but you do not know how to say in chinese,so you can run Basic Mandarin, and find the English Good Morning, it will show you chinese and how to say.
Even you can read after Basic Mandarin for learning chinese.