Final answer:
To initiate a Jupyter Notebook, install it via pip, navigate to the desired directory, and run the 'jupyter notebook' command. To exit, close the notebook tabs and press 'Ctrl + C' twice in the terminal where the server is running, or use the 'Quit' button if available.
Step-by-step explanation:
To initiate a Jupyter Notebook, you first need to install Jupyter via pip with the command pip install notebook. Once installed, open a command prompt or terminal window and navigate to the directory where you want to start your notebook. Then, run the command jupyter notebook. This will start the Jupyter Notebook server and open your default web browser to the Jupyter interface. Here, you can create new notebooks by clicking on the 'New' button and selecting 'Python 3' or any other available kernels.
To exit a Jupyter Notebook, simply close the notebook's browser tabs and return to the terminal window where the server is running. There, press Ctrl + C twice to shut down the server. Alternatively, you can click on the 'Quit' button in the Jupyter Notebook interface to stop the server if it's available. It's important to properly shut down the server to ensure all your work is saved and no processes are left running.