We have hundreds (over 1000+ rather!) of contemporary ebooks available in pdf, doc, formats, ready for downlad to computers, tablets, eReaders and phones. .
You can download textbooks and business books in Pdf formats.
PDF(Portable Document Format) is the oldest and still the most popular e-book document format on the Web and one of the most efficient ways of publishing and distributing digital books. This filetype is the same as that used for printed paperbacks so it's the closest you'll get to the 'real' thing; the visual integrity of the document cover and layout being retained. You'll need a PDF Reader app..(I prefer Adobe Reader).