In this tutorial I will guide you on how to detect emotions associated with textual data which can be either classified as either positive or negative and how can you apply that knowledge in variety of applications depending on what you wanna do. In this tutorial I will guide you on how to detect emotions associated with textual data which can be either classified as either positive or negative and how can you apply that knowledge in variety of applications depending on what you wanna do. For instance you want to perform automatic analysis of customer feedback with directly reading them as either positive or negative feedback you will need to Sentiment analyzer to check the negativity or positivity of the textual data.