https://www.youtube.com/watch?v=f47Uz1C97Uw https://photos.app.goo.gl/UyCcSdYZttxR5bMNA
is inside the .ino file.
there is folder named Hello World i2c special. there, you'll see .ino file. open it with Arduino IDE. instructions, credit, coding, etc. inside.
I am trying i2c backpack for LCD.