Where is it? Find the tutorial at: https://docs.repl.it/tutorials/13-steganography

What is it? Build a Python application that hides and extracts text messages in jpg images.  You'll learn about encoding and decoding text in different formats including base64 and utf-8.

What do you need to follow? A bit of Python experience is ideal, but you should be able to keep up even without it. You'll do everything from your browser so no Python set up is required. You can create a free account on Repl.it to save and share your code.