running the Jupyter notebook: just type 'jupyter notebook' in a terminal, which will open a window or tab in your favorite web browser; there, just select the mini-project file. Check that you can run the instructions with code (tip: there's a button to stop running it if needed).
get familiar with the Python (3) language and with PyTorch (deep learning platform). Even though we won't need advanced knowledge of them here, it's a good investment.