Publishing on demand means that you only publish your book or digital media once it has been purchased. Hence it is done on a one at a time basis. There is another meaning for publish on demand, in reference to publishing models. Find out more about publishing business models.

There are a number of publishers that offer this service, including Amazon.

My two favourites are:

Book Surge [ now owned by Amazon]
Lulu.com - a fantastic site with heaps of invaluable information on formatting, covers, and includes online publishing tools for books, photo albums, CD's. Also very useful cost calculator. Lulu also provide you with a free storefront and listing service to sell your book. A highly rated site.

Both of these sites offer services such as:

Prepublising paid services - editorial or graphics
Publishing online tools
Formatting guidelines for both print pages and cover
Cost calculators
Sales tools
Press Release guidelines
Marketing tips

Full Directory of Self Publising Services

ISBN Identification

If you are intending to go into the print version, you may like to consider obtaining an ISBN number. This is a 10-digit international number for your book that is used by all bookstores, libraries, publishers etc as your books unique identification.

R R Bowker is the exclusive US source of publisher prefixes and accompanying ranges of ISBN numbers for eligible publishers. For more information.

See Other Comparing Publish on Demand Models

Next: Putting Together the Components of Your Book