This is a bundle sale of popular books on business, writing techniques, thinking skills, and more. The content is recommended for self-investment and skill improvement. [Main Contents] - Communication methods - Writing skills - Speaking skills - Time management - Note-taking techniques - Organization techniques, etc. Total of 14 books. No individual sales, please. As these are used items, there may be some scuffs and yellowing, but they are readable. Some books have creases. - "1-Minute Study Method to Truly Improve Your Intelligence" - "The 90% Rule of Communication" - "I Tried to Summarize What 'Good Explainers' Do into One Book" - "Never Run Out of Conversation for 15 Minutes or More with Anyone! 66 Rules for Speaking" - "Full Utilization of Your Planner" - "Organization Techniques for Documents, Planners, and Notebooks" - "Writing Power" - "Time Power" - "Speaking Power" - "Thinking Power" - "The Notebook Technique That Can Be Immediately Useful for Work and Study, with Know-How from 50 Books in One!" - "I Tried to Summarize the Key Points from 100 Best-Selling Books on Writing Techniques into One Book." - "Fundamentals of Writing Skills" - "The Book to Master the Creation of Business Documents" Please only purchase if you understand and accept these conditions.