Concerning your questions: Yes, it will help to read Bhagavad-gita but to have to hear from the realized person. Without the help of guru, if you read independently, you may be misguided. Therefore, so many politicians, scholars, etc. not being guided by the parampara system, have simply misled the public. The Bhagavad-gita is the standard book of knowledge in India and many eminent persons like Gandhi, Aurobindo, Dr. RadhaKrishnan, etc. they tried to understand the Bhagavad-gita, but could not do it. They were themselves misled and on account of their big position they misled so many followers.
Letter to Punjabi Premanand, 16 April, 1976