Ebook Central materials can be viewed in their entirety online within the browser.
You can print and download a limited number of pages per title without any extra software. (note: not all books are available for download)
Some books are also available for full download (or check-out) for 14 days, which requires an Ebook Central account and the free Adobe Digital Editions software to view.
To download an entire Ebook Central item:
The fine print: