Read your NCERT books thoroughly first of all Everyday 2-3 hours study is necessary on regular basis. Categorize the course as per your comfort and start preparing..Study in group, it help you in sharing the ideas and grasping the concepts quick.The first point to be followed by knowing the syllabus thoroughly.
Paper I (Mathematics): Trigonometry, Algebra, Integral Calculus, Differential Calculus, Analytical Geometry, Probability, Statistics, Matrices and Vector Algebra.
•Paper II:
Part A (English): Basic knowledge of English, skills in comprehension, mistake spotting, synonyms, antonyms, article writing, grammar related questions etc.
. Part B (General Knowledge): Includes Physics, Chemistry, history, general science, geography, current affairs, social studies etc.
and according to the syllabus you start your preparation ..