My Book is Out!

I just received an email from Amazon suggesting books I might like. The book at the top of the list is mine! I think I will like it. I haven't held it in my hand yet. I didn't preorder my book because the publisher sends me some copies which haven't arrived yet. Since this is my first published book I am enjoying learning about the post publication process. So far I have one review on Amazon and there are a few slightly used copies for sale. How is it there are slightly used copies for sale when the book just came out in print?

As soon as my books arrive I will let you know what I think, other than I think if you are interested in learning how to paint and sketch anywhere, my book will teach you how.  

If you purchase the book and like it, I would appreciate it if you would write a review saying so on Amazon and a thank you from the bottom of my heart for purchasing it.