Hi Garcia,
China is the place to go to for almost everything you need product wise except of course if you are planning on sell branded items.
Clothing is a good product category - everybody needs clothes to wear :) Make sure you sell the basics mixed with the latest styles!
Electronics, computers and the likes - is another good market category but one of the stiffest! Many sellers are always wanting to sell electronic products especially the latest gadgets. The competition is stiff and the prices are even stiffer.
If you need help locating suitable suppliers just let us know and we'll do our best to find one (or several) for you!
Cheers :)