If you have no idea what you are doing, something like this would be a good starting point:
http://us.ishares.com/product_info/f...erview/TZO.htm
though I would buy the same index funds myself and save myself 0.25% per year... and perhaps buy vanguard equivalents of these fund, they often have lower fees too...
BUT if you are not very familiar with the whole terminology, don't have time, interest, etc to deal with it, just buy TZO and don't worry about it too much, if you go to Charles Schwab or some other full service broker, they will trick you into some funds with 2% annual fee...