PDF or ePub, you choose your format depending on your reading device:
|PC, Mac, iPhone, iPad, iPhone, e-reader or any other reading device tablet|
|ePub (doing nothing)||Mac, iPad, iPhone|
|ePub (reader to be installed)||PC, e-reader or any other reading tablet|
More details about ePub:
Most computers read PDF by default. If your computer cannot do it, install the software for free from http://www.adobe.com/fr/products/reader/
More details about ePub
You can download all ebooks samples you can read on UPblisher.com.
You can save an excerpt on your computer hard disk and synchronise it on a reader or a smartphone. However you cannot replicate it for business purposes.