You can preview the notebooks on GitHub but I am not sure you can run them from there without any issues.

I would recommend uploading the project folder to Google Drive and opening the notebooks in Google Colab to have full control over them. This option should appear at the top of your screen when you click on a given Google Colab notebook. Google Colab is pretty easy to use and there are plenty of resources online to get you started.

To run the notebooks provided here, open the notebook, click on the Runtime tab and click Run all, which will start running all the code cells in the notebook. You will be asked to mount your Google drive. Scroll down to the Mount drive cell and it will guide you through the process. For CrossValidation.ipynb and FinalTest.ipynb, make sure you are running on GPU by clicking on Runtime > Change Runtime type and selecting GPU. Google Colab connects you to a virtual machine where the code is run and your time connected to this machine is limited to 12 hours. It is not guaranteed that cross-validation (i.e. training five models) can finish under 12 hours without using a GPU.

Note that successful execution of the notebooks will make changes to the files provided in the project folder within your Google Drive.