Where can I find the LED lighting expertise, I want to know more about LED lighting such as LED light bulbs, flashlights lamps, car lights, bicycle lights, headlamps, nights lights and so on.

What would you like to know about LED lighting?

Details of each kinds of light

You do realize that you are asking questions on an industry?

You would be better served Googling or using Bing.com to start your research.

Your topic is way to broad to be answered here. You really need to do the work!