Bud, if you do decide the market is the route you want to take, spend a few weeks doing tons of research and planning your investments. As the guys are saying, if you know what you're doing, and with a little luck, there's lots to be made. However, on the flip side, if you hit some bad luck, or don't do enough research, there's lots to lose.
Many dabblers will stack most of their fund on long term investments, pop on a few mid term, and then use a small portion of their capital on short term. The short term will be the most volitile but can spike either way, although you have to watch the trends all the time.
My advice, unless you're willing to invest lots of time to learning the market, go for something safer like an ISA or property.