eBooks have licences that determine how, where, and when they may be used. Conditions of use for eBooks vary by platform and provider.
If you're having issues accessing an eBook, check the conditions of use by clicking Show License under View It on the Library Search detailed result:

The details, such as how many concurrent users may read the eBook, will be displayed.

Check the eBook provider's website for further details, such as:
- the number of pages you may print
- how long a downloaded eBook is available offline.
