Too Long; Didn't Read
Learn Blockchains by Building One: The fastest way to learn how they work is to build one. Python 3.6+ (along with pip) is installed, Flask and the wonderful Requests library. You’ll also need an HTTP Client, like Postman or cURL, but anything will do. You should be comfy reading and writing some basic Python, as well as having some understanding of how HTTP requests work, since we'll be talking to our Blockchain over HTTP.