Acknowledgement

This online, interactive textbook would not have been possible without the support from the Open Educational Resources (OER) Program at Michigan State University (MSU) Libraries. I am deeply indebted to the MSU Library team.

I would like to express my gratitude to Ms. Purnima Mehta, Director General of the American Institute of Indian Studies, for allowing me to work on this project and to Dr. Rebecca Manring, AIIS Language Committee Chair, for introducing me to this project.

Special thanks goes to Dr. Rajiv Ranjan, co-author of the book who guided me through this journey and whose online books were a model for me.

Words fall short to express my gratitude to my colleagues Pratyusa Chakraborty and Somraj Banerjee who gave their voices for the audio clips and Sreejani Dasmunshi who designed the book cover. In addition, I acknowledge the support of my students, teachers, and senior colleagues. I learnt a lot from them in the past twenty years as a language teacher.

Last but not least, I would like to thank to my wife and children, who have always been supportive.