Advantages of eBooks over Print books:
What is the difference between a fixed-layout and reflowable eBook?
Fixed-layout or sometimes referred to as pixel perfect layout is a layout technique where pagination is fixed and text is positioned on a page rather than allowed to reflow (adapt to screen size). Fixed-layout files resemble PDFs (source file supplied) where text is positioned precisely on a page by the creator. They are suitable for Children Books, Comic Books, Magazines, manga, tour guides etc., where position of text, background art are very important. Where as in a reflowable format, text takes up the available space on the device (reflows or adapts).
Is ISBN necessary for my eBook?
You need not require an ISBN to publish your book via KDP (Kindle Direct Publishing). Amazon assigns a 10 digit unique identification number called ASIN (Amazon Standard Identification Number) while publishing. However, it is required to publish your book on Apple iBookstore. It should also be noted that print ISBN cannot be used for eBooks. They must be purchased separately for eBooks if you intend to use one.
What is DRM and do my Books need DRM?
DRM stands for Digital Rights Management. It is a way to protect copyrighted content by embedding a code directly into the eBook. It can also be applied to Movies, Music etc. There are disadvantages associated with DRM. The buyer may not be able to read the eBook on other eReader (or may be able to read the eBook only on limited number of devices), cannot print or share the file. You may decide to use DRM or not by taking the above disadvantages into account. All the major retailers like Apple, Amazon and B & N allow you to use their own DRMs while publishing through them. Also note that DRM can be broken/cracked at the user end even if it’s applied.