Install System Workbench for ST Nucleo
Download
Go to https://www.openstm32.org/HomePage, and create an account.
Then, you can go to https://www.openstm32.org/Downloading%2Bthe%2BSystem%2BWorkbench%2Bfor%2BSTM32%2Binstaller and click on the link to download the software.
The file is install_sw4stm32_win_64bits-v2.9.exe at the time of this tutorial.
Install with all the default options.
Then, register on the https://www.st.com/ website and search for STM32CubeMX.
Download the file en.st-stm32cubeide_1.3.0_5720_20200220_1053_x86_64.exe.zip (at the time of the tutorial) and extract the executable.
Install following the instructions.
Creating a new project
Start STM32CubeMX. Go to File -> New -> New STM32 Project
Go to the Board Selection tab, and select Nucleo-L432KC.