Most of the courses which are skill-based, provide the students with the practical knowledge that they require in a workplace. While your traditional institutes usually have no scope for practical application of knowledge, a course will give you the scope of application. Most of the professional courses would mix theory and practicals in an intrinsic way. While you would get a better and clearer idea of the conceptual terms and their functions and utility, the assignments and case studies given to you would allow you to transform that conceptual theoretical knowledge into practical application. Doing a course related to your job would increase your efficiency and thereby your rate of employability.