Do not "play the stocks game" if you think it's a game. The point of investing is to make money. Don't invest in any company unless you have valid reasons to believe the company will go up in value in whatever time frame you're looking for results. And this should be true every week, or you should sell when you don't feel comfortable with the stock any longer. Because the way you feel, so will other investors, and if for whatever reason they don't feel comfortable, they will pull their money, so you might as well react on that feeling first. If the stock continues its devaluation, then it was a good call by you, if the stock actually gets more valuable, then you still might feel good about leaving it since it might now be even more likely to drop now at its higher price. Don't invest in stock simply because you don't know what else to do with the money. And don't invest money you might need in the next six months; the point is to keep money but make logical bets from time to time on companies when you feel you have a much larger informational advantage than most everybody else, using money you won't need in the near future. The point is not to lose money, though if you do lose a bit, it won't be tomorrow's mortgage payment.

The most important thing to realize is that the best thing you could with the money is to put it in a savings account and try to release lots of software or web apps for feedback and practice in running a business. Your salary and job opportunities will increase, as well as give you a chance to make money on the side, as well, pay for retirement, and a small runway for you to go full time if you want to take your ideas further. Because with stocks, you're buying companies, not pieces of paper, and finding a company that returns 2x or 3x the investment will be hard to do at the scale of companies listed on NASDAQ, and a micro-cap company where you have enough knowledge or control would be hard to find either. But if you invest your time towards creating things, you'll raise the worth of your skills (or at least, remain competitive and diversified), get "free" business lessons from your experience, and may be able to make thousands of dollars on the side per year or month, on top of that, as a bonus. This is almost a guaranteed investment. And if you could use some of the money you saved up to start a company and figure out the accounting behind it, so the only thing you have to worry about is creating stuff, then you'll be basically set for life. Why?

Because as someone trying to run a business, as well as someone who follows the latest in technology, you'll be in a better position than almost any other investor regarding knowing when to invest in tech companies. On top of that, I can imagine that at some point you could even be a seed investor in companies that are not even on the stock exchange. You will also be the go-to guy at your company. Finally, your company might even become profitable enough for you to go full-time or worth enough to somebody that they'll pay you five, six, or maybe even seven figures for it.

Investing is not gambling. And you're paying $7-14 a trade, so it's probably better to stick with 5 companies or so, which helps to diversify, and if you have to sell your whole position to buy a better one, you can sell all of it for just that fee, instead of trying to sell a bunch of different ones for $7-14 each.

Don't invest in companies you wouldn't buy from. Invest in companies that seem well run and on the upward trend, that at the same time, you feel that other people, once they find out how good it is in the next few months, will invest in as well, and therefore you would make your money back and then some, based on lots of new people learning about the company and buying their product and increasing their earnings, as well as the influx of buyers of their stock, sending the price of it up by way of more means than one.

Finally, the trends of the last 40 years are irrelevant to what will happen in the next 40. This is 100% true. Investing is not a tax, and you should not treat it as such (i.e. it leaves your bank account, and if it comes back to help you in any way, then that's great! No, it's not how this works.)