Arduino ide download
From Waveshare Wiki
Install compilation software (windows tutorial)
Open the browser and visit arduinoIDE's official download page, it doesn’t matter if you are not proficient in English, you can switch to Chinese (click to enlarge):
Click here to download the software
Open the installation software just downloaded, double-click to install, and click next all the way:
When the installation is almost complete, the USB driver will pop up to install, click to install
After the installation is complete, a shortcut is created on the desktop, and the arduino IDE software pops up after double-clicking to open it