EPUB - Used by Barnes and Noble, Sony, Kobo/Borders, and most reader agnostic bookstores.
MOBI - Was used heavily early on in the beginning of the ebook era. Mostly gone by the wayside.
PDB - USED by Barnes and Noble up through March of 2010
AZW - Amazon.com
TPZ
Most common are PDF, EPUB, and AZW
Copyrighted books generally are protected by Digital Rights Management. (DRM)
The DRM prevents placing the ebook on devices other than the one for which it was purchased.
It is the format for ebooks that kindles use.
Epub is a newer file format for reading ebooks. Epub is the leading file format today and includes many customizable features. Epub files can be used on Windows, Android, and iOS devices.
Today there are several different websites that offer free eBooks for download. Some of these are: Free eBooks, Get Free eBooks, eBook Directory and even Amazon and Barnes and Noble offer some free eBooks. Remember to check compatibility of the format of the eBooks with your system/reader.
You cannot legally download Harry Potter ebooks, but you can buy them in e-reader format from many major bookstores.
ebooks sites file sharing programs IRC & ebooks communitys yes
ndbm format
file format for samsung gt-c6712 is .smt type file format
Well, I would recommend converting PDF format files to excel format files with a PDF format file to excel format file converter. There are many PDF format file to excel format file converters offered for use.
A Graphics Interchange Format file is a picture format file.
ECW - file format - was created in 1998.
Interchange File Format was created in 1985.
Zip - file format - was created in 1989.