The best way to start for this examination is by knowing the nature of examination. After having decided for the optional one should develop a keen interest in looking at the past years questions to get an idea as to what one should be preparing for. One should also get a proper guidance for the channelization of its time, energy and resources. Planning is very crucial. One must plan and work the plan in a disciplined manner. There should be time frame and small targets fixed to work in this direction. For details you can watch our video– https://youtu.be/jS4WkcxrUMM