You will need ADOBE ACROBAT READER, a free-ware program in order to open and view Ebook files that are saved in PDF format. You can obtain a free version of ACROBAT READER from www.adobe.com or if you prefer, you can download the basic text version of the Ebooks by selecting the appropriate links above. Most Ebook portable hand-held readers will open PDF formatted stories and already have software for this pre-installed.