Dr. Meenakshi Malhotra, Stanford University. Sanjay K Thakur sir was my mentor who taught me fundamental concepts of chemistry, which greatly aided my preparation for Chemistry IIT JEE Advanced and Main exams, helping me to reach the place where I am today. He has been the best mentor, demonstrating patience, commitment, perseverance, and dedication towards his students. Sanjay sir possesses a unique ability to inspire and recognize the potential for achievement and success in every student he undertakes. He made his subject of chemistry very easy, comprehensive, and fun to learn, especially for those preparing for jeemain and jeeadvanced. The classes are interactive and enjoyable, and Sanjay sir ensures that he caters to the needs of every student. Above all, his humility, compassion, and friendliness set him apart as the best teacher among all. I have been extremely fortunate to have him as my mentor, and I owe my career success to him. Utkarsh Gupta, IIT Bombay. I can bet that there is no one better than Sanjay K Thakur sir for Organic Chemistry. He is the best faculty as well as a wonderful guide, continuously motivating us throughout our preparation for IIT JEE Advanced. I still miss you, sir, even in IIT. Shivam Agarwal, IIT Kharagpur. Best teacher in my life....truly the only one whom I have respected by heart.