Postgraduate courses refer to courses that are taught as part of a degree program beyond a bachelor's degree. This may mean courses taught for a master's degree or a PhD. If you want to choose the best postgraduate courses, you will first need to look both backward and forward: decide what your past studies would best prepare you for, and decide what your future educational and career goals are. Once you have a clear idea of what types of degrees you want and which career you would like to commit to, you can begin researching schools with post graduate courses pertinent to your overall goals.
Before applying to any schools that offer postgraduate courses in the subject area you wish to study, be sure to decide whether you intend to attend classes full-time or part-time. This will have an effect both on how long the program takes and which postgraduate courses you will be able to choose. People who work part-time on graduate studies are often employed, meaning they must choose classes that fit around a work schedule, or vice versa. If this is the case, consider looking into online coursework and distance learning options that will save you the trouble of having to attend classes on-site at a particular time. These classes make working full- or part-time possible and much easier.
Remember that you will have to apply to graduate school, much like you applied to a school when you were an undergraduate. This means you will need to fill out applications and get ahold of all relevant transcripts; you should narrow your choices of schools down to a few, as application fees can be quite expensive for some schools, and remember that just because you want to take postgraduate courses at a particular institution does not mean you will get accepted. Choose a few programs that will fit your needs and be prepared to attend any one of them.
It is also important to keep in mind that your undergraduate degree, combined with work experience and other relevant experience, can qualify you for some graduate degree programs, but not all. Be sure to carefully consider what programs you will fit in with, and research the requirements for applying to that program. Once you have made it into a particular program, you should meet with an academic advisor as soon as possible to determine the best courses to take, and to draw up a course schedule that will work well for you.