If you're a 3D modeler or animator, you may find yourself needing to open FBX files in Blender. Fortunately, Blender has built-in support for importing and exporting FBX files, so you can seamlessly work with assets from other 3D software. Here's how to do it:

1. Launch Blender and open a new or existing project.

2. Go to 'File' > 'Import' and select 'FBX (.fbx)' from the dropdown menu.

3. Navigate to the location of the FBX file on your computer and select it.

4. In the import settings panel, you can adjust options such as scale, orientation, and smoothing. Make any necessary changes based on the specific requirements of your project.

5. Click 'Import' to bring the FBX file into your Blender project. You may need to wait a moment for the import process to complete, especially if the file is large or complex.

6. Once the import is finished, you should see the FBX file's contents appear in the Blender viewport. You can now manipulate and animate the imported objects as needed.

7. When you're ready to export your Blender project as an FBX file, simply go to 'File' > 'Export' and select 'FBX (.fbx)' from the dropdown menu. You can then adjust export settings and save the file to your desired location.

With these simple steps, you can seamlessly bridge the gap between Blender and other 3D software by importing and exporting FBX files. This flexibility allows you to collaborate with other artists, use assets from online marketplaces, and integrate your work into various pipelines. Happy blending!