Your account will be designated as “day trader status” if you have 3 round trip trades (one round trip = an opening and closing transaction), in a rolling 5 business day period. If you have 4 round trip trades in a 5 day period, you will be restricted from day trading for 90 days. Your brokerage firm will probably allow you to buy a stock and hold it overnight before closing the position. If you have a second day trade violation, your account will either be restricted from trading or you can request your account be a non day trader status account and buy and then sell after 3 business days. This depends upon the specific brokerage firms rules for some of these details but they are getting very strict with enforcing these rules.

Scalping is a trading strategy geared towards profiting from minor price changes in a stock's price. Traders who implement this strategy place anywhere from 10 to a few hundred trades in a single day with the belief that small moves in stock price are easier to catch than large ones; traders who implement this strategy are known as scalpers. Many small profits can easily compound into large gains, if a strict exit strategy is used to prevent large losses.

Trading: Spotting the trend and momentum comes in handy for a scalper who can even enter and exit briefly to repeat a pattern. A novice needs to understand the market pulse, and once the scalper has identified that, trend trading and momentum trading can help achieve more profitable trades. Another strategy used by scalpers is countertrend. But beginners should avoid using this strategy and stick to trading with the trend.
The Gap & Go! is one of those Intraday Trading Strategies that capitalises on the gappers. Gappers are the securities that show a gap between the prices on a chart-when there is an upward or downward movement in the price with no trading in between. Gaps can be created by various factors like earnings announcements, any other type of news releases or a change in the outlook of the analysts.
The first EMA (50) must be positioned above the second EMA (100). When this has occurred, it is essential to wait until the price comes back to the EMAs. In turn, the Stochastic Oscillator is exploited to cross over the 20 level from below. The moment you observe the three items arranged in the proper way, opening a long (buy) order may be an option.
ECN/Level 2 quotes: ECNs, or electronic communication networks, are computer-based systems that display the best available bid and ask quotes from multiple market participants and then automatically match and execute orders. Level 2 is a subscription-based service that provides real-time access to the Nasdaq order book composed of price quotes from market makers registering every Nasdaq-listed and OTC Bulletin Board security. Together, they can give you a sense of orders being executed in real time.