A hands-on, beginner-friendly guide that teaches how to create procedural, real-time visuals by building fragment shaders from first principles through short, interactive lessons; it covers core concepts such as coordinate systems, color, shape and distance functions, smoothing and antialiasing, noise and randomness, transforms and animation, and feedback techniques, emphasizing practical experimentation and visual intuition so artists and programmers can demystify GLSL/WebGL and craft generative graphics.