To study through UNISA is a great learning experience. UNISA as it is an online teaching experiencing enforces one to have discipline as you study at your own pace.
Disadvantages to studying through UNISA is ensuring that one has a stable internet connection which can prove difficult if you stay in South Africa. One also needs to stay up to date with your study schedule as the workload can be a lot at times.
An advantage of this institution with reference to the course I was doing is that it teaches one to apply the knowledge acquired instead of copying what you learnt. Meaning that one has to give his/her own opinion in some instances which helps with increasing ones ability to apply certain theories taught.