ZBrush is a powerful tool for 3D modeling and sculpting, and editing OBJ files within the software can greatly enhance your creative workflow. Here are some essential tips for effectively editing OBJ in ZBrush.

1. Importing OBJ: To begin editing an OBJ file in ZBrush, start by importing the OBJ into the software. Navigate to the Tool palette and click on 'Import' to bring in your OBJ file. Make sure to check the scale and orientation of the imported model to ensure it matches your desired specifications.

2. Using Subtools: ZBrush allows you to work with multiple subtools, which can be especially useful when editing complex OBJ files. Use the Subtool palette to manage and organize different parts of the model, making it easier to focus on specific areas during the editing process.

3. Sculpting and Painting: ZBrush is renowned for its powerful sculpting and painting features. Utilize the various brushes and tools available in ZBrush to sculpt, refine, and add intricate details to your OBJ model. Experiment with different sculpting techniques to achieve the desired look and feel of your model.

4. UV Mapping and Texturing: When editing OBJ in ZBrush, consider utilizing the UV Master plugin to efficiently unwrap and create UV maps for your model. This will facilitate the process of applying textures and materials to your OBJ, enhancing the overall visual appeal of the model.

5. Exporting OBJ: Once you have completed the necessary edits to your OBJ model, you can export the updated file from ZBrush. Navigate to the Tool palette and click on 'Export' to save the edited OBJ file, ensuring that any changes made during the editing process are retained.

In conclusion, mastering the art of editing OBJ in ZBrush can greatly enhance your 3D modeling and sculpting capabilities. By following these essential tips and leveraging the robust features of ZBrush, you can effectively edit OBJ files to bring your creative visions to life.