VWAP stands for Volume-Weighted Average Price.
The blue line on my charts is the 1-minute VWAP, and it's THE ONLY LINE THAT MATTERS IN THE STOCK MARKET.
If you have TD Ameritrade's Thinkorswim (TOS), you can add the 1-minute VWAP on your charts by going to Studies/All Studies/V/VWAP and looking at a 1-minute chart.
But I also employ a Multiday VWAP that requires a custom TOS code, so if you use TD Ameritrade's platform, here are my 6 Steps to Multiday VWAP. Check that out and add this trendline to your TOS charts for VWAP "surround sound," so to speak.
However, it should be noted that we have some very smart people building us proprietary charting software that won't require TOS -- my Warlock's World army will be the first to know when it's ready!