First, install the Anaconda distribution of Python, which includes Jupyter Notebook.
Here are links to the installation instructions for different operating systems:
The Anaconda package includes Jupyter Notebook.
Check that you can run the conda command, to verify that Anaconda
was installed successfully.
On Windows: Launch the “Anaconda Prompt” program from the start
menu. Run the command conda list. The command should display a
list of the installed packages.
On MacOS: Launch a terminal. Run the command conda list. The
command should display a list of the installed packages.
On Linux: Launch a terminal. Run the command conda list. The
command should display a list of the installed packages.
Click here for the official verification instructions
Run the Jupyter Notebook server to start using notebooks.
On Windows: Launch the “Anaconda Prompt” program from the start
menu and run the command jupyter notebook
On MacOS: Launch a terminal and run the command jupyter notebook
On Linux: Launch a terminal and run the command jupyter notebook
The notebook server should start, and the Jupyter Notebook file browser should load in your web browser.