In this tutorial by Leon van Zyl, viewers learn how to build AI applications using Langflow, a no-code platform. The video covers setting up Langflow locally, navigating the Langflow UI, and creating the first project. Leon explains the prerequisites, including installing Python 3.10 or greater, and demonstrates how to create a virtual environment and install Langflow. He also provides an easy setup script for quick installation. The tutorial explores the Langflow interface, including the My Collection and Store sections, where users can find and share project templates. Leon highlights the importance of Global variables for storing sensitive data like API keys. Finally, he guides viewers through creating a new project, adding components to the canvas, and using features like the playground, APIs, and chat widget for testing and integration. This tutorial is the first in a series aimed at teaching users how to create everything from simple chatbots to advanced RAG agents using Langflow.