Engaging the UN, 2nd edition - Digital
The file is in epub format. You can read it using a variety of devices.
Mac and IOS - file will open automatically in iBooks.
PC - You may need to download an epub reader if your version of Windows does not have a default. One free option is Freda.
Kindle - The epub file will need to be converted to Amazon's mobi format. This CNET article shows how and links free software to do it.