Resources
SketchUp
SketchUp is a 3D modeling computer program that is widely used for a variety of drawing applications such as architectural, interior design, landscape architecture, civil and mechanical engineering, film, and video game design. It offers a user-friendly interface that allows users to draw and design in a three-dimensional space with ease. SketchUp is known for its simplicity and ease of use, making it accessible to both professionals and hobbyists alike. Users can create detailed models with textures and shadows, and the software also supports plugins to enhance its functionality. SketchUp is available in both free and paid versions, with the latter offering additional features and capabilities for professional use.
Start Here
I recommend you start with the free SketchUp Fundamentals course which has excellent instructional videos.