I also want to learn short trades maybe after I recover most of my investments. Good trades are always profitable regardless of the market conditions, once you have strong analysis and experiences you can always have good profits in short period of time.
If you've never done any trading before, I strongly recommend not to invest real money at first, or try with a very little investment, but the best is to test different strategies by placing "blank" money and see how it goes.
Huge difficulty in this field is to control your emotions. There are thousands of reasons why even the most experienced traders will take bad decisions because they did not comply with strict money management rules.