Review on 🔧 Longruner for ArduinoIDE Mini V3.0 ATmega328P 5V 16M Micro Controller Board Module for ArduinoIDE - Set of 3 by Todd Wigfall

You should add some IDE setup instructions. I downloaded Arduino IDE 1.8.7. Then to set up the IDE: Tools.Board.Arduino NanoTools.Processor.AtMega328P (Old Bootloader)Tools.Port ComXX -> See comments below if you don't see the expected port. Assemble your sketch. Press the reset button on the middle of the board and then quickly press the download button on the IDE.Serial ports. Windows 7 automatically loaded the CH340 drivers. The board lacks the commonly encountered FTDI serial port chipset. Check Device Manager to see if you have the serial port. Mine showed up as "USB-SERIAL CH340 (COM20)". So I selected Tools.Port.COM20 under Ports in the Arduino IDE.