Learn how to implement WiFiManager with ESP32 to eliminate hard-coded WiFi credentials in your sketches. Explore the powerful features of this library, including web-based configuration for SSID and password, on-demand WiFi setup, and the ability to add custom parameters. Discover techniques for modifying existing sketches, working with JSON and SPIFFS, and saving parameter data. Master the art of creating flexible ESP32 projects that can easily connect to different WiFi networks without recompiling code, making them ideal for both personal and commercial applications.