1. Can I get a sample LED? 2. How Hard Can I Drive LEDs? 3. What Is the Best Way to Pulse Modulate LEDs? 4. How Should I Drive a Large Array of LEDs? 5. How Can I Make Beam Optimization Experiments Easier? 6. What Do I Need to Know to use Packaged LEDs for Communications and Sensing? 7. Are LEDs more efficient than other light sources such as incandescent and fluorescent types? 8. How Can I Measure LED Power Output? 9. What are Millicandelas? 10. More About Photometric Units? 11. How Do Electronic Cameras Use IR to Measure the Distance to the Subject? 12. How Does Ratiometric Range Measuring Work? 