comparing any graphic design course with online tutorial, generally, you can learn much faster in graphic design course, but in term of technique, online tutorial is more impressive if you learn in a correct way... let's say you learn by trial n error, it is more impressive since you realize by experience... but that's for technique studies only, and somehow learning with internet tutorials is way too slow... to get the full concept of graphic design, a course is still necessary... moreover, you'll find you improve much faster with a course taken...