This tutorial attempt to identify the major procedures used in research sampling. Why is this an important step to consider in undertaking any research? This is because in research sampling, we want to obtain a representative sample. That is a sample that looks like the population within an acceptable margin of error. In order to understand this better, we will start off by defining some research sample jargons that will constantly be used within the discussion. However, emphasis will be made on the distinction between the two major types of sampling procedures: probability and non-probability sampling and how they apply in different research situations. Last, we will take a short test at the end of this lesson to refresh our minds with the concepts discussed.