Steps for Thorough Test Coverage and Accuracy in Manual Testing of a Web Application

1. Understanding Requirements: Review and understand the requirements document to ensure clarity on the functionalities to be tested.
2. Test Planning: Create a comprehensive test plan outlining test cases, scenarios, and expected results for each functionality.
3. Test Execution: Perform manual testing as per the test plan, executing test cases and documenting results meticulously.
4. Bug Reporting: Report any defects found during testing in a structured manner, including steps to reproduce and severity assessment.
5. Regression Testing: Conduct regression testing to ensure that new changes do not impact existing functionalities.
6. Exploratory Testing: Perform exploratory testing to uncover any unforeseen issues or edge cases that may not be covered in the test plan.
7. Usability Testing: Evaluate the web application's user-friendliness, ensuring that it is intuitive and easy to navigate.
8. Cross-browser Testing: Test the application on different browsers and devices to ensure compatibility and consistent performance.

By following these steps diligently, manual testers can achieve thorough test coverage and accuracy in testing a web application.