Talk to your career counselor to see if remedial classes are necessary. If so, schedule these classes first.
Block out times when you have to be at work or scheduled events. Make sure your classes do not conflict with these events.
Map out your classes so you can see how far you have to travel from class to class. This is important when you have little time between classes.
Determine if the class has a lab associated with it. If it does, do not forget to schedule the lab with the class.
Write out your schedule in a document or spreadsheet so you can see which classes you have each day. Write out the class times and locations. Determine if you have enough time to get to class.
Add your work and other time commitments to the schedule and see if any conflicts occur.
Review and revise if conflicts occur.