Creating simple obj files is a great way to step into the world of 3D modeling. To get started, you'll need a 3D modeling software such as Blender or Maya. Once you have the software installed, follow these simple steps to create your first obj file:

1. Open the 3D modeling software and create a new project.

2. Begin by creating a simple shape, such as a cube or a sphere, using the software's tools and features.

3. Once you're happy with the shape, it's time to export it as an obj file. In most 3D modeling software, you can do this by navigating to the 'File' menu and selecting 'Export'. Choose 'Wavefront (.obj)' as the file type and save your file.

That's it! You've successfully created a simple obj file. You can now use this file in other 3D modeling projects or import it into 3D rendering software to bring it to life.

As you become more comfortable with creating obj files, you can experiment with more complex shapes and designs. You can also explore other file formats, such as .stl or .fbx, to broaden your 3D modeling skills.

Remember, practice makes perfect, so don't be afraid to experiment and try new things. Happy modeling!