hey i think i have got it,that i should try to mask that sound with some other sounds or music but can you please recommend me some music which can help me .and one more thing please tell me if i can PR books on different and unrelated subjects at the same time.but i dont understand which library are you reffering me to when you say that "look up the study techniques at the library and PR them.and you didnt tell me how should i study for the coming exams
