digital tutorial, SketchUp software, learning process, step-by-step guide, 3D modeling, beginner user, computer screen, visible interface, hands-on keyboard and mouse, clear text annotations, educational environment, indoor lighting, focused light on desk, high-resolution display, detailed instructions, interactive learning, video demonstration, architectural design, real-time rendering, user-friendly, practical examples, construction lines, geometric shapes, texture application, material selection, layer management, sunlight simulation, shadow effects, perspective view, wireframe mode, full-screen mode, screencast.