If you're into 3D modeling and animation, you may want to import OBJ files into Houdini for your projects. Here's how to do it in a few simple steps.

1. Launch Houdini: Start by opening Houdini on your computer. If you don't have it yet, you can download it from the official website.

2. Go to File: Once Houdini is open, navigate to the 'File' menu at the top of the screen.

3. Select Import: From the 'File' menu, select 'Import' and then choose 'OBJ' from the dropdown menu.

4. Locate the OBJ File: A window will pop up for you to locate the OBJ file on your computer. Navigate to the folder where the OBJ file is saved and select it.

5. Adjust Import Settings: After selecting the OBJ file, you will be prompted to adjust import settings such as scale, orientation, and other options. Make any necessary adjustments based on your project requirements.

6. Import the OBJ File: Once you've finalized the import settings, click 'Import' to bring the OBJ file into Houdini.

7. Convert to Houdini Geometry: The imported OBJ file will now appear in Houdini as a geometry object. You can further manipulate and work with the imported object to fit your project needs.

8. Save Your Project: Don't forget to save your project to retain the imported OBJ file within your Houdini project.

That's it! You have successfully imported an OBJ file into Houdini for your 3D modeling and animation projects. With this new skill in your arsenal, you can now take your 3D creations to the next level in Houdini. Happy creating!