How to Buy LED Bulbs eHow.com
"...Instruction:
Step 1
Determine the wattage needed. For a table lamp, you only need about 3 watts but for lighting a room you need between 7 watts and 10 watts.
Step 2
Determine the beam angle that you need. LED lights do not emit light in all directions like normal lights. The narrower the beam angle the more like a spotlight the LED will appear. A 100 degree beam angle should be wide enough for most rooms and lamps.
Step 3
Decide how many LED bulbs you need. If you plan to upgrade multiple lamps in your house, consider getting a multi-bulb pack to save money.
Step 4
Compare prices from multiple sources. The lights can cost around $100 or more so differences in price can add up. See resources for several online dealers.
Step 5
Chose the LED bulbs that are right for you and order them online or purchase them in person."
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