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Idea for getting rich using computers to track stocks
There are many ways to trade. Rules based trading is practiced by professionals. You can indeed create a rule set to make buy and sell decisions based on the price action of your chosen security. I will direct you to a good website to further your study: I have found that systemtradersuccess.com is a well written blog, informative and not just a big sales pitch. You will see how to develop and evaluate trading systems. If you decide to venture down this path, a good book to read is Charles Wright's "Trading As A Business." It will get a little technical, as it discusses how to develop trading systems using the Tradestation trading platform, which is a very powerful tool for advanced traders and comes with a significant monthly usage fee (~$99/mo). But you don't have to have tradestation to understand these concepts and with an intermediate level of spreadsheet skills, you can run your own backtests.  Here is a trading system example, Larry Connors' "2 period RSI system", see how it is evaluated: http://systemtradersuccess.com/connors-2-period-rsi-update-2014/, and this video teaches a bit more about this particular trading system: https://www.youtube.com/watch?v=i_h9P8dqN4Y IMPORTANT: This is not a recommendation to use this or any specific trading system, nor is it a suggestion that using these tools or websites is a path to guaranteed profits. Trading is a very risky endeavor. You can easily lose huge sums of money. Good luck!