If you're new to ZBrush and want to begin creating 3D models, importing an OBJ file is the first step towards realizing your vision. Here's how to import an OBJ file into ZBrush and start sculpting:

1. Begin by launching ZBrush and opening a new project. Once the software is open, navigate to the 'Tool' palette and click on the 'Import' button.

2. In the dialogue box that appears, locate the OBJ file that you want to import. Select the file and click 'Open' to bring it into your ZBrush project.

3. Once the OBJ file is imported, you can manipulate it as a new subtool. You can scale, rotate, and move the imported OBJ to position it and ensure it fits seamlessly into your project.

4. With the OBJ file in place, you can now start sculpting and refining its details. Use ZBrush's powerful sculpting tools to add intricate textures, shapes, and other details to your imported model.

5. Take advantage of ZBrush's various brushes, such as the Standard, Clay, and Dam Standard brushes, to sculpt and refine the surface of your model. You can also use masking and other techniques to create intricate designs and patterns on your model.

6. As you sculpt, remember to save your progress regularly to avoid losing any of your work. ZBrush offers an array of saving options to ensure that your project is secured as you work.

7. Experiment with ZBrush's various features and options to bring your imported OBJ to life. Utilize the program's materials, lighting, and rendering capabilities to visualize your model in real-time and make necessary adjustments to achieve the desired result.

By following these steps, you can efficiently import an OBJ file into ZBrush and jumpstart your sculpting process. With ZBrush's intuitive interface and powerful tools, you'll be able to create stunning 3D models that will elevate your projects to new heights.