The online course on Manual Testing Training offered by TechSlate focuses on providing the course-takers with the process of software testing which includes proper planning, management, scheduling, test cases, defect analysis, identification, and so on. With this, it explains several types of testing techniques like dynamic techniques, static techniques, experience-based techniques, exploratory testing, error guessing, performance testing, regression testing, test execution, preventive measures, generating test reports, and test metrics.