The most effective way to study is to lock the door of your room or just close it in such a way that not a bit of sound enters it then take our your books or whatever you have and start studying! Make sure you aren't disturbed or distracted by anything!
Have enough sleep, then listen to classical music. That's my secret for always getting something done
Be sure you're in a quiet room, in a good mood, there is no body to disturb you and concentrate with your study, the concentration is important when you are studying.