Sometimes you will come through Springerlink which searches both journal and eBook material.
Run your search in the search box
From the results page, use the column on the left to limit your search to Auburn eBooks only, as Springer also provides AULibraries with journal content.
To download an item, no special software is needed - each book is a simple PDF and does not carry a limited checkout period. You can save them to Adobe Digital Editions for transfer to an eReader - just save the file to your "My Digital Editions" folder.