Mathematics is concerned with the study of abstract numbers as well as real quantities. It studies various sets of numbers such as natural numbers, rational numbers, real numbers, integers, etc. Pure mathematics studies the inherent nature of abstract entities while applied mathematics uses methods that are derived from mathematics in diverse fields such as engineering, computer science, business, etc. This book will also provide interesting topics for research which readers can take up. It attempts to assist those with a goal of delving into the field of mathematics.