When working on 3D modeling, animation, and rendering projects in Blender, it's essential to be able to preview your work effectively for a better workflow and visual feedback. Here are some tips on how to preview in Blender:

1. Camera View: To navigate to the camera view in Blender, simply press '0' on your numpad. This will show you exactly what the camera sees, allowing you to preview your scene from the perspective of the final render.

2. Rendered Preview: Use the 'Rendered Preview' mode to see how your scene will look with materials, lighting, and rendering effects applied. This can be found in the dropdown menu at the top of the 3D viewport.

3. Viewport Shading: Blender offers different viewport shading options such as solid, material, and rendered. Experiment with these different options to get a better sense of how your models and scenes will look in different lighting conditions.

4. Playback Controls: When working on animation projects, utilize the playback controls to preview your animations in real-time. You can adjust the frame rate and playback speed to get a better feel for the final animation.

5. OpenGL Render: You can use the OpenGL render option to quickly generate a real-time, low-quality preview of your scene without the need for a full render. This can be useful for getting a quick look at the overall composition and layout of your scene.

6. Camera Animation: If you have a camera animation in your scene, use the camera animation controls to preview the motion path and timing of your camera movements. This can help you refine and adjust the camera animation for a better cinematic experience.

By utilizing these previewing techniques in Blender, you can streamline your workflow, make informed creative decisions, and achieve better visual results in your 3D projects. Remember to take advantage of the real-time feedback and visualization tools available in Blender to bring your creative vision to life.