According to me I found Midhafin very reliable and helpful for Part 1 FRM.

I am an engineering student with zero background in finance.I had no clue how to go about the preparation. Micky Midha sirs way of teaching is really in detail..right from scratch to advanced each topic was taught conceptually , logically, graphically..

As I am a working professional i was scared initially.I started my preparation with the online videos that they provide in July 2021 with zero background and managed to clear the exam well iny first attempt.