Whatever that you’ve learnt, pretend to teach it or share it as an interesting fact. This method will help you learn faster.
Any subject that you are learning, take interest in it and participate in it actively. This helps the brain to retain the memory.
Studying or learning a complex topic in patterns are called Mnemonics. These patterns help in learning the complex topics or subjects.
Whatever information that you’re grasping, make it’s visual representation in your head. This helps structure and organize your mind and you’ll be easily able to learn the topics.
Though the subject is Complex or Boring, show interest in it and be curious about it. This will help you understand better and as your doubts will get cleared you’ll generate genuine interest in the subject.
Conduct daily tests of the subjects that you’ve been studying as it will strengthen your memory and you will identify which areas need more focus.
Don’t study only from books. When you are studying a complex or difficult subject, it is possible it has more to it and not only limited to textbooks. See Videos, read Newspapers, Listen to Podcasts etc. to grab more information about it.