From the interior layout and design (Adobe InDesign ),
book cover design (Photoshop),
uploading your book to the online POD service (print on demand),
publishing and selling it on Amazon.com

You can also sell your book as an eBook pdf download,
Amazon Kindle or iPad.

All YOU need to do is write your book!

Since 2003 I have published 9 books using print on demand
publishing services.
Print on demand (POD) is a method of producing books or other media using the digital printing technology that allows an entire book to be printed and bound in a matter of minutes. The books or other media are produced only at the time of purchase. Digital printing makes it easy and cost-effective to produce books one or two at a time or in small lots. Traditional publishers usually print thousands of copies all at once. Although this costs less per copy, it requires a large publishing company that can pay for and store all that inventory.
I have published most of my books with Lulu.com. At Lulu you can sell your book in print but also as a download which is a method I like since it makes my books available for anybody around the world at a low price while my royalties remain unchanged. Also Lulu offers a distribution package and for about a $100 you get an ISBN# and your book becomes available on Amazon.com
Another service I used is CreateSpace.com . Publishing with them means that your book automatically becomes available on Amazon.com and without any extra expense (no need for a "distribution package"). Another good POD solution is Blurb.com. Blurb is the best solution if you are interested in publishing a book that is a photo or art portfolio since they offer photo quality printing service.
Lulu.com offers both high quality printing services (more expensive of course) and store quality book printing. If you are interested in publishing any type of book, I recommend going with Lulu's bookstore printing or CreateSpace, but if you want to put together a portfolio, wedding book, or any other type of a memory book I recommend going with Blurb or Lulu's photo book services.

Available services and suggested prices:
Standard book layout: mostly text, some images, pdf output - $200-$250
Book cover design: $50-$120
Advanced book layout: text, images and page backgrounds, pdf output - $350 and up
Kindle/ iPad formatting - $50
Account sign up, file upload and publish to print on demand services - $30-$150
Photo book: portfolio, wedding, travel etc. - $150 and up