Here's something else for "newbs" or for those that have some money and just can't find somewhere to put those employees to work.
Blackrock runs several publicly traded ETF's... Exchange Traded Funds.
They're basically Funds set up to do particular "work" - Dividends - Volatility (or lack thereof) - Gold - etc.
Here's Blackrocks website -- and there's a TON of information about their various funds.
http://us.ishares.com/home.htm
I have used their Corporate High Yield (HYG) fund for a long time to park cash.
So here's the way I THINK about this type of "investment" (an ETF) -- I use them for a purpose. i.e., I use JNK and HYG to place cash in and either pick up the MONTHLY dividend ---- or if they go up enough before the dividend - I might just take the gain (taxed differently!) - and sometimes I get the dividend AND the gain. But either way -- I do not think of them as investments. They're just placeholders. They're not buy and forget.
SOME of the iShares ETF's COULD BE investments...