This document discusses effective study techniques for college students. It recommends using focused and diffused modes of learning. In focused mode, students should read textbooks multiple times, take detailed notes in class, and review them shortly after. In diffused mode, students allow their mind to process the information subconsciously by taking breaks between study sessions. The document also stresses the importance of practicing retrieval of information through techniques like flashcards and self-testing to commit concepts to long-term memory through chunk formation and spaced repetition. Regularly alternating between focused study and diffused relaxation modes can help students learn and retain information more effectively.