Attend school in the evenings and on the weekends: Many after-work part-time programmes offer everything from single-skill courses such as learning computer skills to getting your entire bachelor's or master's degree.

Attend summer school: You might think summer school is just for students who failed a course, but most universities offer summer sessions that allow you to take the same classes that are offered during the fall or spring semesters.

Summer courses are usually more intensive since you have less time to cover the same amount of information than during the regular school term. However, summer school is usually cheaper than classes taken during the regular term, and you do learn the same material.

Take classes via distance learning: The Internet has brought a whole new life to distance learning. As an added benefit, these courses are sometimes cheaper than the traditional face-to-face classroom sessions.