You must work hard on Mathematics, Economics and Accountancy as these 3 subjects will also form part of your CPT examination course.Try to read, learn and practice all your XII subjects from your NCERT books first and once you are done with these books then you may refer to the books written by some renowned authors.

For CPT exams, ICAI provide their own study material which is very exhaustive in itself and will provide you with sample test papers. Syllabus of CPT’s Economics, Accounts and Maths will be totally based on class 12th syllabus and your good conceptual knowledge of these subjects will help you in attempting MCQ based questions of CPT. Fourth subject in CPT is Mercantile Law which is not difficult to understand as it covers basic concept of Mercantile Laws applicable in India.

Good Luck!