Write your book using word processing software such as Microsoft Word or Word Perfect. Single space your text, using the fonts you want to use in the final product. Set the page dimensions in your word processing software to the size of your finished book. Standard book sizes are 5.5" x 8.5" or 6" x 9".
Proofread your finished book. Ask three people you trust to proofread as well. Edit and correct your book.
Convert your finished book to .PDF format using .PDF conversion software. If you are working with a cover artist, ask the cover artist to create a .PDF file of the cover.
Send your .PDF files to the print-on-demand company. Some companies work through email while other companies require you to upload the files to their website. If the company requires a fee for getting your book ready to print, pay it at this time.
Buy a copy of your book for yourself to show people that you are a published author.