Hi, You have really explained well about intraday trading strategy its best to use it intraday as the newsflow means no fundamental shifts to the market and relative stability in the underlying assumptions. Smart traders may wish to use the 15 minutes/1-hour candles to create these strategies. Lesser may mean transactions costs will eat into profits and higher may mean too much interference with underlying markets.

Scalping highly liquid instruments for off-the-floor day traders involves taking quick profits while minimizing risk (loss exposure).[14] It applies technical analysis concepts such as over/under-bought, support and resistance zones as well as trendline, trading channel to enter the market at key points and take quick profits from small moves. The basic idea of scalping is to exploit the inefficiency of the market when volatility increases and the trading range expands. Scalpers also use the "fade" technique. When stock values suddenly rise, they short sell securities that seem overvalued.[15]
Day trading is defined as the purchase and sale of a security within a single trading day. It can occur in any marketplace but is most common in the foreign exchange (forex) and stock markets. Day traders are typically well-educated and well-funded. They use high amounts of leverage and short-term trading strategies to capitalize on small price movements in highly liquid stocks or currencies.
The basic strategy of news playing is to buy a stock which has just announced good news, or short sell on bad news. Such events provide enormous volatility in a stock and therefore the greatest chance for quick profits (or losses). Determining whether news is "good" or "bad" must be determined by the price action of the stock, because the market reaction may not match the tone of the news itself. This is because rumors or estimates of the event (like those issued by market and industry analysts) will already have been circulated before the official release, causing prices to move in anticipation. The price movement caused by the official news will therefore be determined by how good the news is relative to the market's expectations, not how good it is in absolute terms.
Many professional money managers and financial advisors shy away from day trading arguing that, in most cases, the reward does not justify the risk. Conversely, those who do day trade insist there is profit to be made. Day trading profitably is possible, but the success rate is inherently lower because of the complexity and necessary risk of day trading in conjunction with the related scams. Moreover, economists and financial practitioners alike argue that over long time periods, active trading strategies tend to underperform a more basic passive index strategy, especially after fees and taxes are taken into account.
Software and gimmicky products that promise riches overnight typically have a very short shelf life. They may work for a little while, but ultimately they will fail you unless you know how to make adjustments to the software yourself. Instead of getting suckered into trading product scams you're much better off spending your time and money on your own education.
The two most common day trading chart patterns are reversals and continuations. Whilst the former indicates a trend will reverse once completed, the latter suggests the trend will continue to rise. Understanding these trading patterns, as well as ‘triangles’, ‘head and shoulders’, ‘cup and handle’, ‘wedges’ and plenty more, will all make you better informed when it comes to employing your trading strategies.
Individuals who attempt to day trade without an understanding of market fundamentals often lose money. Technical analysis and chart reading is a good skill for a day trader to have, but without a more in-depth understanding of the market you're in and the assets that exist in that market, charts may be deceiving. Do your due diligence and understand the particular ins and outs of the products you trade.
It needs sheer dedication, hard work, patience, quick wit and immense knowledge to be successful in intraday trading. Successful intraday trading involves 90% waiting and 10% execution. So, yes, it can make a trader rich in a relatively short period of time if the correct processes are followed, and yes, it is possible to hold on to the profits in the long-term if the correct strategies are followed.
The first type of scalping is referred to as "market making," whereby a scalper tries to capitalize on the spread by simultaneously posting a bid and an offer for a specific stock. Obviously, this strategy can succeed only on mostly immobile stocks that trade big volumes without any real price changes. This kind of scalping is immensely hard to do successfully, as a trader must compete with market makers for the shares on both bids and offers. Also, the profit is so small that any stock movement against the trader's position warrants a loss exceeding his or her original profit target.
Trading stocks intraday offers different opportunities than a traditional ‘buy and hold’ strategy. Speculating on stock prices via CFDs or spread betting for example, mean traders can profit from falling prices too. Margin or leverage also reduce the capital required to open a position. So you can take a position on the latest news release, product announcement or financial report – as well as technical indicators.

When it comes time to take profits, the swing trader will want to exit the trade as close as possible to the upper or lower channel line without being overly precise, which may cause the risk of missing the best opportunity. In a strong market when a stock is exhibiting a strong directional trend, traders can wait for the channel line to be reached before taking their profit, but in a weaker market, they may take their profits before the line is hit (in the event that the direction changes and the line does not get hit on that particular swing). 
Swing traders usually go with the main trend of the stock. But some traders like to go against it and trade the counter trend instead. This is known as “fading,” but it has many other names: counter-trend trading, contrarian trading, and trading the fade. During an uptrend, you could take a bearish position near the swing high because you expect the stock to retrace and go back down. During a downtrend to trade the fade, you would buy shares near the swing low if you expect the stock to rebound and go back up.

This combination of factors has made day trading in stocks and stock derivatives (such as ETFs) possible. The low commission rates allow an individual or small firm to make a large number of trades during a single day. The liquidity and small spreads provided by ECNs allow an individual to make near-instantaneous trades and to get favorable pricing.
Range trading, or range-bound trading, is a trading style in which stocks are watched that have either been rising off a support price or falling off a resistance price. That is, every time the stock hits a high, it falls back to the low, and vice versa. Such a stock is said to be "trading in a range", which is the opposite of trending.[13] The range trader therefore buys the stock at or near the low price, and sells (and possibly short sells) at the high. A related approach to range trading is looking for moves outside of an established range, called a breakout (price moves up) or a breakdown (price moves down), and assume that once the range has been broken prices will continue in that direction for some time.
Day trading poses a number of hurdles. Mainly, each trading day is slightly different. Traders need a method that works in nearly all market conditions. That doesn't mean a day trader will win every day. On the contrary, even with a great method, there still may be several losing days a month. Winning every trade or every day isn't important, it is winning over the course of each week and month that matters.
By the same token, volume characteristics of a breakout also can have a shortened time frame. Rather than the 50-day moving average of volume as your threshold for heavy turnover, look to the volume of the shorter consolidation area for clues. If the breakout volume can surpass the recent activity, that can be a sufficient confirmation of strength.
Once you have a specific set of entry rules, scan through more charts to see if those conditions are generated each day (assuming you want to day trade every day) and more often than not produce a price move in the anticipated direction. If so, you have a potential entry point for a strategy. You'll then need to assess how to exit, or sell, those trades.