Okay, well you make a good point. We might as well disregard the $200 and help you learn about trading anyways. All these posts saying "don't trade" don't help you learn more than what you already knew.
Personally, I'm a swing trader with a day trader's mindset. I prefer to hold for more than a day, but I'll exit ten minute later if I already have a nice profit. As such, I find trades with technicals (technicals hard to explain and there's no perfect way to use them so unfortunately you will have to read up about them. basically they are just indicators as to where a stock might stop going up or a stock might stop going down. It only works for big stocks and it will not work with pennies). I also try to think ahead of the game, kind of like chess.
For example, today I went long AMZN because it is the end of the money and this is the time that funds will be sending out reports to their investors. A fund can buy a boatload of stock that has been going up in value and send to their investors that they had "xx%" of this stock in their fund for the month of April. I had a hunch that AMZN would be bought up by funds today, thus increasing it's price, and happened to be right. I bought the weekly 230c option for $3 ($300 in money) and sold it for $5 ($500 in money) making a profit of $200 with my $300 investment (I actually had 4 contracts so it was $800 in profit but I scaled it down to be more relevant to your situation). This would be a trade where I had a feeling that something would happen and I went entirely with my guy, I don't suggest it as it is similar to gambling, but it does pay off occasionally. In order to trade like this, you have to understand options and understand how the market works. Unfortunately it took about a year for me to be able to develop this sense of understanding.
Now trading with technicals is something that might get you somewhere farther because they can be more reliable in a larger time frame. Today I made another trade shorting PCLN, which is basically betting that PCLN goes down with option puts. I decided to do this because PCLN failed to make an all time high in the morning so I knew that there was heavy resistance (a lot of people wanted to sell at that price) and that PCLN would not continue going up. Technical indicators will show you all kinds of things and will give you a general, but unreliable, idea of what a stock might do (something for you to read up on. never completely rely on technicals though. stock news and other factors such as people that want to sell a hundred thousand shares will have a major impact on a stock)
News and rumors: These are dangerous times to trade. Rumors are rumors until they are news and news can be either good or bad. Stay away from this if you don't have a complete understanding of what will happen to a stock if the news is good, mediocre, or catastrophic. But it is essential, at least to me, to understand the news and company information. I wouldn't be investing in a company that lost a billion $ last year, even if everyone says that it won't go any lower.
These are the two basic ways that I trade. I could get into a whole lot more detail but it all comes back to knowing what you're trading and believing in your trade. I often lose more than I should because I believe in my trades which as a result allows me to gain more as well because I will not exit a trade just because I am down $100 within 5 minutes of buying it. You have to learn to either hold through and let it play out so that your -$100 becomes +$200 or don't enter the trade at all. At the same time, know your limits. I trade options, something you could look into if you want, and I always sell before I lose 50% of my investment (options can do that, they're very risky). It's just a matter of having a plan, as our friend Bob always says.
I hope that this has helped. Feel free to ask more questions if you have them and once again, I wish you the best of luck. I respect your determination and I hope that this will help you succeed in this poor man's game
Edit: Please remember that I am simply posting my trading style and that this may/will not work for you. Everyone has a different perspective on how to see things so I suggest paper trading until you find a strategy or style that works for you.