Day trading is making short-term trades, lasting less than one day, in an attempt to extract a profit from the financial markets. Some day traders are very active, making many trades each day, while other traders may only make one or two trades per day. The most common day trading markets are stocks, forex and futures. Day trading can be a part-time or full-time career, depending on the trader's style.
Swing trading is actually one of the best trading styles for the beginning trader to get his or her feet wet, but it still offers significant profit potential for intermediate and advanced traders. Swing traders receive sufficient feedback on their trades after a couple of days to keep them motivated, but their long and short positions of several days are of the duration that does not lead to distraction. By contrast, trend trading offers greater profit potential if a trader is able to catch a major market trend of weeks or months, but few are the traders with sufficient discipline to hold a position that long without getting distracted. On the other hand, trading dozens of stocks per day (day trading) may just prove too white-knuckle of a ride for some, making swing trading the perfect medium between the extremes.
You're probably looking for deals and low prices, but stay away from penny stocks. These stocks are often illiquid, and chances of hitting a jackpot are often bleak. Many stocks trading under $5 a share become de-listed from major stock exchanges and are only tradable over-the-counter (OTC). Unless you see a real opportunity and have done your research, stay clear of these.