"“A clay pot sitting in the sun will always be a clay pot. It has to go through the white heat of the furnace to become porcelain.” - Mildred Struven

How to study effectively? (Applies to school/college students and PMP®/PMI-ACP®/CAPM® aspirants)

SQRRR or "SQ3R" is reading comprehension method named for its five steps: survey, question, read, recite, and review. The method was introduced by Francis Pleasant Robinson in his 1946 book Effective Study
SQ3R stands for
  1. Survey (the book/a chapter to get an overview)
  2. Question (ask one or more questions for each section in a chapter)
  3. Read (and mentally answer the questions)
  4. Recite (recall the answers to a section’s questions from your memory and write them down)
  5. Review (a complete chapter, by answering the chapter’s questions from your memory)
To know more about SQ3R refer the below link

Cornell Notes
The Cornell method provides a systematic format for condensing and organizing notes. The student divides the paper into two columns: the note-taking column (usually on the right) is twice the size of the questions/key word column (on the left). The student should leave five to seven lines, or about two inches, at the bottom of the page.
Notes from a lecture or teaching are written in the note-taking column; notes usually consist of the main ideas of the text or lecture, and long ideas are paraphrased. Long sentences are avoided; symbols or abbreviations are used instead. To assist with future reviews, relevant questions (which should be recorded as soon as possible so that the lecture and questions will be fresh in the student's mind) or key words are written in the key word column. These notes can be taken from any source of information, such as fiction and nonfiction books, DVDs, lectures, text books, etc.
Within 24 hours of taking the notes, the student must revise and write questions and then write a brief summary in the bottom five to seven lines of the page. This helps to increase understanding of the topic. When studying for either a test or quiz, the student has a concise but detailed and relevant record of previous classes.
When reviewing the material, the student can cover the note-taking (right) column while attempting to answer the questions/keywords in the key word or cue (left) column. The student is encouraged to reflect on the material and review the notes regularly
How to take Cornell Notes (for readers)
How to take Cornell Notes (for viewers)