Is stock exchange not automated for the most part? People can buy and sell their stocks with pretty much just the click of a button. That's essentially what I'm looking for.
Of course, the stock market is limited to publicly traded stocks, and there are all kinds of regulations applying to the actions of the companies traded.
If you are really interested in this area, you might want to start here:
http://en.wikipedia.org/wiki/Securities_regulation_in_the_Un...
Seriously, talk to a lawyer. Or, at the very least, start reading up on Securities Regulations on Wikipedia.