① "Study for 30 minutes a day!" The winning study method for life ② The Art of "Saving!" ③ Simple Methods Doctors Use to Sharpen Your Mind After 40 These three books are old, but still readable. How about them for those who want to read various genres? However, there are scratches and stains. There is also age-related deterioration. Please check the photos carefully and understand that these are used items before purchasing. If you have any questions, please comment before purchasing.