Download and install the Arduino IDE from https://www.arduino.cc/en/software, or from your system’s package manager.
Download the additional libraries from https://github.com/lewisxhe/GxEPD, and extract the ZIP into a new folder in your ~\Documents\Arduino\libraries\ folder (on Linux this may be ~/Arduino/libraries).
Open Arduino and select Tools > Board: > Boards Manager…
From Boards Manager, search for esp32 and click Install.
Once it is installed, close Boards Manager then select Tools > Board: > ESP32 Arduino > TTGO Lora32-OLED V1.
Plug the board into your PC with a USB cable and wait for any drivers to install. Go to Tools > Port: and select the COM port for your T5. If Arduino IDE can’t find the port for your board, you may need to download and install the UART driver from https://www.silabs.com/developers/usb-to-uart-bridge-vcp-drivers.