You should plan to spend about 3-4 hours for every credit hour of coursework you are completing. Online courses are available in a more flexible format, but the assignments and tests are not any easier than a regular classroom-based course. Please budget time in your weekly schedule to make sure you have plenty of time to get your work done. You should log in to your class several times a week to see if there are any announcements or updates and include homework as one of your required "To-Do's" on your list. Trying to complete coursework in 15-30 minute increments usually ends up being unsuccessful. You will need to block off at least an hour each time to study.