The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Changcui Wang:
Lightening Business English teaches you the communication skills used in the workplace, and focuses on the language and skills needed for typical business communication such as presentations, negotiations, meetings, small talk, socializing, correspondence, report writing, and a systematic approach. In both of these cases it can be taught to native speakers of English, for example, high school students preparing to enter the job market.