[peterloo]

There is NO real way to play it safety, without risk. Risk, unfortunately, is usually proportional to the return

However, if you're afraid of losing $$$ (which is the destiny of most "casual" investors, as the fund managers kills them easily by some tricks like manipulating the stock price by the capital they gain), or play them solely for fun, you may just select a stock, play it with vitual money, and see the return afterwards.