Were to start on a website that never has being QA'd

If you have a website that has never undergone quality assurance (QA) testing, it's essential to start by establishing a structured approach to ensure comprehensive testing coverage. Here's a step-by-step guide to help you get started:
Analyze the requirements:
Review the website's functional and non-functional requirements, including its intended purpose, target audience, features, and performance expectations. This analysis will help you determine the scope of testing required.
Define test objectives:
Set clear goals and objectives for the QA process. Identify the critical functionalities, potential risks, and desired outcomes to guide your testing efforts effectively.
Create test plans:
Develop a comprehensive test plan that outlines the testing approach, test scenarios, test cases, and testing schedule. It should also include the resources, tools, and environments needed for testing.
Perform functional testing:
Start with functional testing, which verifies if the website's features and functionalities are working correctly. Test each feature independently and in various combinations to ensure they function as intended.
Conduct usability testing:
Evaluate the user experience (UX) and user interface (UI) design of the website. Identify any usability issues, such as navigation problems, unclear instructions, or accessibility concerns.
Perform compatibility testing:
Check the website's compatibility across different browsers, operating systems, and devices. Test its responsiveness on mobile devices and ensure it functions properly on various screen sizes.
Test performance and load:
Assess the website's performance under normal and peak load conditions. Conduct load testing to determine how it handles high user traffic and stress testing to evaluate its stability and responsiveness.
Conduct security testing:
Identify potential security vulnerabilities and weaknesses within the website's infrastructure. Perform penetration testing to ensure protection against common attacks and secure sensitive data.
Test for browser compatibility:
Test the website's functionality on different web browsers (e.g., Chrome, Firefox, Safari, Edge) to ensure consistent behavior and compatibility.
Perform cross-link testing:
Validate links within the website to ensure they are functioning correctly and do not lead to broken or dead pages.
Test forms and data validation:
Check all forms and data input fields for proper validation, error handling, and secure data transmission.
Implement automation testing:
Consider automating repetitive and time-consuming tests to improve efficiency and coverage. Use tools like Selenium, Cypress, or other suitable frameworks to automate test cases.
Document and track issues:
Maintain a comprehensive record of all issues, bugs, and glitches discovered during testing. Use a bug tracking system or project management tool to manage and prioritize issues effectively.
Retest and validate fixes:
After issues are resolved, retest the affected areas to ensure the fixes were successful and didn't introduce new problems.
Seek user feedback:
Consider conducting user acceptance testing (UAT) or gathering feedback from real users to gain insights into their experience and identify any areas for improvement.
Deploy the website:
Once the testing phase is complete, deploy the website to the production environment, ensuring all issues are resolved and the website meets the desired quality standards.