Explore ESP32 development using the TTGO T-Display in this comprehensive tutorial. Begin by soldering header pins and setting up the board on a breadboard. Install necessary libraries, including Adafruit Unified Sensor and DHT sensor library. Start with a basic program to get sensor output, then build upon it to add display functionality. Design and implement a user interface, incorporating dynamic values and screen refreshing. Implement temperature unit conversion between Fahrenheit and Celsius using boolean values and button interrupts. Address button debounce issues with appropriate filters. Create a second screen for heat index display, controlled by another button. Learn practical IoT development techniques while building a functional temperature and humidity monitoring device.