Study for developing to make broader view : Friends if you are fond of studies & preparing for your academic exams or any competitions or you would like to enrich your knowledge & information. NCERT books are best and these books express too much in too few words but many other specifics books are also available in markets, these should also be studied at later stage. One fact we should always remember, that is the method of teaching by most of the coaching institutes, these are mainly confined to develop our techniques or they are making us as technicians rather than scholars to catch a topic more quickly. May be it is not correct that all institutes do this but most follow this path, mainly unrecognized. So my advice and request to all of you to study by your heart and enjoy it as you are playing your most favorite game. Try to enrich your wisdom not technique or shortcut methods because your technique can be failed but wisdom never... Study for your satisfa...