To initiate the web application development process, begin by defining clear objectives and conducting market research to understand your target audience and competitors. Choose a suitable tech stack, including programming languages, frameworks, and databases. Design wireframes to conceptualize the application's structure before diving into front-end development using HTML, CSS, and JavaScript. Proceed to back-end development, where server-side logic is implemented, databases are managed, and communication between front and back ends is established. Thorough testing is essential to identify and fix bugs, ensuring a stable and secure application.