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Meet Subbarao Lingamgunta,Top-tier educator of CSE , relentless motivator, Known as "Reddy Sir" . As a distinguished GATE topper and IIT Bombay alum, his journey is not just a testament to academic excellence but a profound commitment to shaping the future of aspiring minds. With over 14 years of teaching experience, He has earned the title of the No-1 Teaching Instructor of CSE, guided over 25 lakh students in GATE-CSE, GATE-DA, PSU, and Placements courses. His words of encouragement resonate in classrooms, creating an atmosphere where learning is not just about acquiring knowledge but also about conquering challenges. Beyond that, He's also a Co-Founder of Exam Prep Tool, AquadSoft, and Book My Best Class. What sets him apart is not just his impressive credentials but also his role as the "God of Algorithms" among students, having produced numerous toppers. His dedication to education is evident in the success stories he creates, making him a guiding light for students venturing into the world of computer science and engineering

ExamPrepTool, the ultimate educational platform for all aspiring candidates for GATE CSE, GATE DA,DSA,Placements courses, PSUs including ISRO, DRDO, BARC, NIC, HAL and UGC-NET CSE. At ExamPrepTool, we understand the importance of quality education, and thus we offer 24x7 video access to lectures, allowing you to learn at your own pace and convenience.

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Curious to know insights on various Engineering competitive exams? We at EPT, ensure to provide latest & updated information related to GATE, PSU & ESE exams.


Topper Talks

Abhinav Garg
Abhinav Garg


Prabhav Verma
Prabhav Verma





Our Students Say!

Abhishek Rathore

Enrolled Student

I extend my heartfelt gratitude for your invaluable teachings. After completing Data Structures, I've now completed Algorithms through your lectures. I am confident in every concept, especially in Time complexity. Your unique approach to teaching Time complexity is unparalleled. Thank you, sir, for your unwavering dedication..

Subhi Kanth


I was lost and overwhelmed before I discovered Exampreptool. Their well-structured study materials and mentorship have been instrumental in my academic growth. Thank you EPT.

Hemanth Kumar


Thankyou for all the knowledge guidance and inspiring us for our future sir . You are THE GOD OF CSE AND ALGO. I'll make you proud very soon. Love you from bottom of my heart.Thankyou sir