books.google.com - This book offers a thorough grounding in machine learning concepts as well as practical advice on applying machine learning tools and techniques in real-world data mining situations. Inside, you'll learn all you need to know about preparing inputs, interpreting outputs, evaluating results, and the algorithmic...http://books.google.com/books/about/Data_Mining.html?id=6lVEKlrTq8EC&utm_source=gb-gplus-shareData Mining
This is a decent book at a high level. If you like a lot of theory, this isn't the book for you. The authors are also the authors of the machine learning tool Weka, which is briefly covered in this book.