When I started upsc preparation, being engineering student, I was very poor in economics. But I got blessed with teacher and friend like Nirav Dada. I still remember a economics session in which electricity was down and then instead of calling off the lecture, Dada took 'candle light lecture' for us. So you can be sure about quality, professionalism and commitment of him and his team in HVDCEC. Besides this I will add one more important point that beside knowledge you will definitely get values from here whose sources are very rare in today's world.