Tiny Obj Loader is a lightweight C++ library that allows you to easily load 3D models into your graphics programming projects. It provides a simple interface for reading and parsing Wavefront .obj files, which are commonly used to store 3D models and their associated material and texture information.

To get started with Tiny Obj Loader, first, include the header file 'tiny_obj_loader.h' in your C++ project. This header file contains the necessary functions and structures for loading .obj files.

Next, you can use the 'tinyobj::attrib_t' struct to store the vertex position, normal, and texture coordinate data from the .obj file. The 'tinyobj::shape_t' struct can be used to store the index information for each individual shape in the model. Finally, the 'tinyobj::material_t' struct can be used to store the material properties for the model.

Once you have included the necessary header file and defined the appropriate data structures, you can use the 'tinyobj::LoadObj' function to parse the .obj file and populate the data structures with the model information. This function takes in the file path of the .obj file, as well as optional parameters for loading textures and materials.

After calling 'tinyobj::LoadObj', you can access the loaded model data through the 'attrib', 'shapes', and 'materials' members of the returned 'tinyobj::attrib_t', 'tinyobj::shape_t', and 'tinyobj::material_t' objects, respectively. You can then use this data to render the 3D model in your graphics application using OpenGL, Vulkan, DirectX, or any other graphics API.

Tiny Obj Loader provides an efficient and easy-to-use solution for loading 3D models in your graphics programming projects. Its lightweight nature and simple interface make it a popular choice among developers working with 3D graphics. By following the steps outlined above, you can quickly integrate Tiny Obj Loader into your projects and start loading 3D models with ease.