Learn how to build a Flask REST API in this comprehensive 40-minute tutorial for beginners. Explore the fundamentals of REST and APIs, set up a virtual environment, and install necessary dependencies. Create a simple REST API, model data, and establish a database. Dive into Flask Restful, define arguments with RequestParser, and implement resource endpoints for users. Master techniques for marshalling and serializing JSON data, handling POST requests, and managing user-specific endpoints. Gain hands-on experience in updating and deleting data, equipping yourself with essential skills for backend web development using Python and Flask.