So a book written by David Beckham is good proposition. I attempt to handle writing or research a 1-2 evenings a week, and at the very least 3-4 hours on the weekend. In fact, I even designed a weather station with a 5th grade class like a student instructor. http://www.masskorea.co.kr/bbs/board.php?bo_table=free&wr_id=3809771