First off, thanks to Lynn for all the great questions! I hope my answers were helpful, and I look forward to hearing from everyone--please feel free to ask me anything about my book Reunion, about family history, or about writing and publishing in general, and I'll do my best to help.
Bettyann, thanks for the kind words! I'm glad to hear that you like Reunion so far, and I hope you like the rest of it just as much. It's nice to hear that the book has given you some ideas. And with court reporters doing your proofreading, I'm sure you'll be in great shape on the editing front.
To answer your question: Yes, I've used CreateSpace as the printer/distributor for the print version of my book on Amazon. For those who don't know about CreateSpace, it's a print-on-demand company that is owned by Amazon; when a reader goes to your book's Amazon page and orders the print version (as compared to the e-book version), CreateSpace fulfills the order on Amazon's behalf and ships the book to the customer. The author doesn't have to pay any large sums of money upfront to have the book stocked at Amazon, because copies of the book aren't printed up until an order comes in.
One of the chief advantages of CreateSpace is that your book will always show as "In Stock" at Amazon--so you don't have to worry about losing those readers who hate waiting days or weeks for the book to be shipped. And I've found CreateSpace to be very user-friendly, so I certainly recommend it if you plan on putting your print book on Amazon.
Now, when it comes to selling print books outside of Amazon, it's a bit more complicated. CreateSpace has an option (called "the Expanded Distribution Channel") that permits you to sell your book through Barnes and Noble's website, and to have your book made available to the distributors from whom bricks-and-mortar bookstores order their books. However, there's another print-on-demand company, called Lightning Source, that you might want to consider for purposes of getting your print book onto BarnesandNoble.com and bricks-and-mortar stores. Lightning Source is owned by Ingram, which, I believe, is the biggest distributor of books to bookstores in the United States, and perhaps the world--so if you use Lightning Source, your book will be placed into the Ingram catalog, and that means most bookstores will be able to order it, if they choose to.
There are authors who choose CreateSpace, and there are those who choose Lightning Source, and then there are some who choose to use both (that is, use CreateSpace for Amazon, but use Lightning Source for everywhere else). A number of websites and blogs discuss these issues in a lot more detail, so you definitely should read through them. But, hopefully, this has helped!