I recently started a 3 week Marketing Writing Bootcamp with Marketing Profs. This course is a combination of live webinars and video that you can review on your own time. The beauty of this model is that you can work the course material into your daily schedule.
As the course runs every day, I figured that I would schedule about an hour every day to make sure I kept up with the course material. This got me thinking about when the most effective time is to fit professional development into your work day.