The first challenge was how to provide quality content. I went to Kota and bought some good books from there. My situation at that time was so bad that I had no money left while I was coming back from there. I watched online videos of well-known teachers to know how they teach. The second challenge was to build a team. When I started, other coaching teams started to poach our team members. Still, I managed to provide coaching for NEET for Rs 4000 while others were charging Rs 70,000. Initially, 50000 children joined ‘Physics Wallah’. The third challenge was to find tech-savvy people and retain them because nothing works with just good teachers. Thanks to our technical team, we managed to do the biggest educational programmes live, with the joining of about 1.23 lakh people through our app