Be it coaching for Prelims or Mains; it may be for General Studies, Aptitude Test or may be for optional subjects, one thing is for sure- your guide, your teacher will certainly help you to understand the subjects better.
If you are at any good institute, you would be exposed to trend analysis of previous years question papers and most of the good teachers try hands with some cleaver identification of expected questions from important topics. Those who believe in self-study, need to make efforts of your own and have to do this guesswork themselves.
The clarity, ability to make points, interlinking of topics, application and to elaborate as per questions requirement and above all which points, facts and information are to be related to question asked comes to you only when you understand the subject basics and its contents well.
Learning any new subject in a short span of time is quite challenging. In Civil Services Examination coaching, we have a lot of experts, known for their magical skills to make you familiar with new subject, teach, make you feel comfortable and help you in securing good marks in examinations.
It has been observed; many aspirants with 2-3 months coaching with new subject have put in good show and have produced tremendous results.
A good teacher never make choice when they teach a group of around 150-200 students. It is your receptive mind, your involvement and devotion in class and ability to pick up the soul of the topic and use it to your benefit which really works.
So, take advantage of the opportunity and indulge in some serious preparation. But, be sure to find the right coaching institute and the faculty that can help you to uplift your preparation.