Preparation on your behalf is an essential first step in the hiring process. If you're going to make the financial investment to have someone author a book for you, you must begin by compiling as much information, research, ideas and thoughts you have for the book in order to give the ghostwriter a clear understanding of your vision. The more you give him to work with, the easier it will be for him to create the book you desire.
Find a ghostwriter via the Internet or by contacting a publisher or university writing program. Look for writers that are experienced in the genre that your book is going to be. Ask possible candidates to submit writing samples for your review to find the author that best suits the style and tone for your book.
Work out a deadline and payment schedule. Costs for ghostwriting services can range anywhere from $5,000 to $50,000 depending on the writer you choose. Some may agree to do the book for free--"on spec"--with the understanding that there will be a higher payment made for the completed work depending on the success of the book. Rates can be based per word, per page, per hour or just on a flat rate for the project as a whole. It is important to figure this out before hand and agree on deadlines for work completed.