In this tutorial I'll teach you how to run the U8g2 graphic test on a SPI 128x64 LCD display with ST7920 controller.
The Arduino for beginners tutorials series guides you through the world of Arduino. A video is around 10 minutes and shows you step-by-step how to build the circuit and write the code. The website contains the course material, circuit diagram, Arduino code and shopping list of all the components used in the tutorial.