The volume and variety of data is increasing day-by-day due to wide application of information technology and easily accessible of internet. To analyze these data to get useful information, Data Science is used that applies tools and techniques such as Data Mining, Machine Learning, Statistics etc, for analysis. In order to get useful patterns from these data, data mining techniques such as classification, association analysis and cluster analysis, prediction, visualization etc are used. This book introduces you to several concepts of data mining and their practical implementation using Rapid Miner tool. This book also contains illustrated examples for making the concepts clear to a first time reader. This book can also be used as a self guide to learn data mining technologies.The book uses figures and outputs of implementation of data mining concepts using Rapid Miner tool.