The eBook file that you purchased is protected with Digital Rights Management (DRM).  Files protected with DRM must be downloaded and read using Adobe Digital Editions or a software that is compatible with Adobe DRM. The ACSM file is a key to open your eBook using this software.

These files have the following restrictions to prevent the content from being posted or shared:

 - The provided link may be used on 6 different devices at different times. This link is accessible from the original email.

 - Access may be restricted to use by a single consumer with authentication through an Adobe ID.

 - The downloaded file may not be transferred to a different device.

 - The eBook may not be shared with another user.

 - The eBook file may not be copied.

You can learn more about DRM and the software needed to open the file in the FAQ section on the support page.

Once you download Adobe Digital Editions to your device, you will be prompted to open the eBook using that program. Adobe Digital Editions can be downloaded for free here. You will need to set up an Adobe ID and authorize your device before trying to download the file.

Click here for instructions on how to download and authorize the required software.

Click here for instructions on how to download the file to your device.