The document outlines 10 major mistakes made during a project to migrate 5000 pages of content to a new content management system within 18 months with a staff of only 4 people. The mistakes included having no clear process, unrealistic expectations of what metadata could do, ignoring user needs, hiring bad consultants, being too broad and narrow in focus, and setting unrealistic timelines. The document advocates learning from failures, explaining your value, narrowing your focus, getting outside help, and using your best judgment when you don't know what you're doing.