free course

Morning! I know the "real " answer is to test it, but I wanted to draw on your experience first. I am going to offer a freebie, but which is better - a 90 page (short pages) ebook or 90 day course? Any experience or suggestions are welcome. Thanks in advance. Profezor

here is a real freebie I just found: Free computer science online courses: Machine Learning. To sign up use this direct link: http://ml-class.org/ Introduction to Artificial Intelligence. To sign up use this direct link: http://ai-class.org/ Introduction to Databases (my personal choice). To...