What you need to graduate or complete training varies at each college or program.
For certificates, completion requirements may also include classwork and internships working in your chosen field. Once you start your training, make sure you work with the school or program to understand what is needed to earn your certificate.
For most degrees, you will need to take a certain number of credit hours. All students may be required to take general education classes. You will be required to take classes that are specific to your program or major. Note that financial aid also only covers classes which are used for your degree.
For many health care degrees, there is a clinical component to complete for graduation. This may take place in a learning laboratory at the school, or a health care institution such as a hospital or nursing home.