For this to work you have to 1st download arduino IDE then
you also have to download 3 libraries which are-
1.) one wire library // https://www.arduino.cc/reference/en/libraries/onewire/
2.) dallas temperature library// https://www.arduino.cc/reference/en/libraries/dallastemperature/
3.) liquid crystal library // https://github.com/junwha0511/LiquidCrystal_I2C_Hangul
go to-> [ sketch>include library>manage libraries>"search these 3 libraries and add them" ].
You can also download them from any browser (download links are given above) and then transfer them to this destination-
[ "C:\Users\ "your current user" \Documents\Arduino\libraries" ] in your computer.
After completing this you can download the "temp. controlled load using arduino.ino" file from the repository and open it inside your arduino IDE for any modifications.