Read textbooks as much as possible. There is no source as reliable as textbooks to study class 12th electronics. Solve all the exercises given in the textbooks as well as in the class. Applied practice is always better than just by hearting definitions and theories.Before exams, it is advisable to go through last years’ exam papers, to get an idea about what kind of questions will appear in the final exam.A recommended way of making studying easier is enrolling for 12th electronics classes.