The book "Machine Learning Concepts for Beginners- Theory and Applications" provides the in-depth knowledge in the field of Machine Learning to graduate, post graduate and research scholars. Basically, machine learning is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so.