VWAP or Volume weighted average price is an indispensable tool for intraday traders to forecast the price move of stocks. It does not necessarily give trading signals but it helps in buying low and selling high. When used with other trading indicators it can definitely help in increasing the accuracy of your trading strategy. It is also used by large institutional investors or hedge funds to buy/sell at a point which would not cause sudden movement is stock prices.
Check out the below link to download a excel based VWAP trading startegy: