The aim of this course is to introduce basic concepts of epidemiology in study design, data collection, and preliminary analyses of health-related research with assignments and discussions involved. In the first part, the instructor will give an introduction of the roles played by epidemiology in public health and global health. In the second part, lectures about major ways of quantifying health events in the population and their usage of them for the estimation of relative risks will be given. The third part will be the considerations of causal inferences, identification and management of potential biases as the basis of fair comparisons in health-related studies. At last, the fourth part will cover the details of basic observational and intervention study designs. The assignments will be closely attached to the lectures previously given for a better understanding of the contents. Real-life examples from each aspect of global health research topics and related literature are given and illustrated in the course.