For me only one time explaining the concept to you is enough and u will masters in that, what u need to do is just focus and practice and u will easily get through all the exams . My way of teaching is to start with reading fully and clearing concepts and making notes , then doing mock and pyqs so much so that the exams looks like a piece of cake to eat . u will enjoy studying with me and I will teach u in crisp and short to make u understand better. + more - less