Where is it? Find the tutorial at: https://www.udemy.com/course/try-django-1-10/
What is it? You'll learn how to build your own URL shortener like Bit.ly using the Python programming language and the Django web framework.
What do you need to follow? This is a complete course for beginners, however some basic Python knowledge will be beneficial. You will also need the Python program installed on your computer or you can use an online IDE like Repl.it and run everything in your browser.