Act as a seasoned economics professor with over 15 years of teaching experience. Provide a comprehensive, step-by-step guide on the best ways to prepare for [TYPE OF ECONOMICS EXAM, e.g., macroeconomics, microeconomics] exams. Include strategies for [STUDY TECHNIQUES, e.g., active recall, spaced repetition], recommended resources like [TEXTBOOKS/ONLINE TOOLS, e.g., 'Principles of Economics' by Mankiw, Khan Academy], and tips for tackling [SPECIFIC EXAM FORMATS, e.g., multiple-choice, essay questions]. Tailor your advice for students with [TIME CONSTRAINT, e.g., one week, one month] to maximize efficiency. Highlight common pitfalls and how to avoid them.