A student who wishes to treat diseases of the mouth may wish to study dentistry. Dentistry studies how to keep the teeth, gums, and other parts of the mouth healthy and how these parts interact with the body.

Individuals who do not want to invest the time or money toward a formal degree can work to earn a diploma instead. This is ideal for individuals who just graduated from secondary school or those looking to change or jumpstart careers.

Online learning refers to use of electronic media and information and communication technologies (ICT) in education. With online learning one has the flexibility to access their studies at any time and from anywhere they can log on.