Borrowed from Wikipedia --
Akshaya Tritiya, variously spelt as Akshya Thiritiya, Akshaya Trutheeya, Akshaya Tritiiya and also called Akshaya Trithi, falling on the third day of the bright half of the lunar month of Vaisakha of the traditional Hindu calendar, is one of the four most auspicious days of the year for Hindus.
The word Akshaya, a Sanskrit word, literally means one that never diminishes, and the day is believed to bring good luck and success. It is widely celebrated in all parts of India by different sections of the society irrespective of their religious faith and social grouping. The day is particularly considered auspicious for buying long term assets like gold and silver, including ornaments made of the same; diamond and other precious stones; and the real estate. The legend states that any venture initiated on the auspicious day of Akshaya Tritiya shall continue to grow and bring prosperity. Hence, it is normal to see many of the new ventures, like starting a business, ground breaking for construction etc on the Akshaya Tritiya Day.
Hype around Akshaya Tritiya
Buying gold is the most important aspect of this day these days
So where to buy gold
You can buy in local gold stores
If you would like to buy online
http://www.gaithersburgcoin.com/index.htm -- Local to DC Area
If there any other places to buy please post