Aldiko Book Reader is a free software which allows you to download and read books in pdf and epub format. Aldiko Book Reader lets you browse huge catalogs of eBooks, including best-sellers, new releases and classics (lots of them are FREE). Aldiko Book Reader supports both Android phones and tablets. You can create your own bookmarks anywhere in the book, rapidly jump to a different section of the book through the table of content.
Requires Android 2.3 or up