You are working on your desktop computer. Look for the "Read Online" or "eBook Full Text" links. Also, most eBook providers allow you to take notes online, and will store your notes if you have an account with them.
You want to read the eBook on your mobile device or tablet. Bluefire Reader, the recommended reading app for downloaded eBooks, allows you to take notes and export them* when you are done with the eBook.
*Make sure to export your annotations before the checkout period expires.*
While you can download an eBook to your desktop computer and read it within Adobe Digital Editions, it does not permanently store your notes. Once the checkout period for the eBook expires, any notes you took within Adobe Digital Editions will disappear.
Make sure you have Adobe Digital Editions installed on your computer. This will "unlock" the eBook content so you can read it on your computer and/or transfer it to a mobile device.
Due to publisher restrictions, some eBooks cannot be downloaded. These can only be read online, via the eBook Full Text link:
The fulltext of EBSCO eBooks are not optimized for small mobile devices. If this affects you, EBSCO will give you the option to email yourself a link to the eBook so you can access it from your desktop at a later time.
Wait 30 minutes before attempting to access the eBook again - this is the default timeout period that must elapse before the eBook will be accessible again.
Why this happened: The system thinks you were done with your previous session and started a new session for you. Since this eBook was accessed on your previous session, it remains "checked out" until the default timeout period (30 minutes) has elapsed.
How to prevent this from happening again: Sign in to your My EBSCOhost account.
Your checkout period has expired. EBSCO eBooks have a 2 day limit; EBL eBooks have a 7 day limit.
Each eBook in Adobe Digital Editions has a banner across the book cover image that indicates the remaining checkout period. eBooks whose checkout periods have expired will have a red banner with the text "Expired"
Adobe Digital Editions FAQ: http://www.adobe.com/products/digitaleditions/help/