Do I need an Adobe ID?
Yes, an Adobe ID will enable you to read the eBook and synchronise the eBooks you download across all of your devices. For example, if you download an eBook into Adobe Editions on your home computer you will be able to save it onto your eReader, Apple, Android or other mobile device.
When you first connect your eReader to Adobe Editions or download the mobile app you will be asked to set up an Adobe ID. Overdrive recommends that you use the same Adobe ID across all devices as this will ensure they all synchronise your eBook loans.