Statement- Typically you want to play stocks around 9:45 am est. Anything before that is automation and algo trading from the previous day. Extremely volatile and risky IMO. If you start paying attention. Stocks normally give a clear direction around the time mentioned ad make it safer to trade them. 

Volume- Many times people associate volume with the upside of a trade. Wrong perspective. Keep trading as real as possible so that the big picture makes more sense. Volume is simply people buying and selling the stock at certain time periods. The more demand there is to buy and sell that stock. We as traders need that high volume (demand/attention) because it creates the volatility (range) we need to trade the stock within specific support and resistance areas. 

Panic Dip Buys- Ideally you want to focus on panics when stocks have been up multiple days and had big moves 150%+. When they are over-extended from the original support/breakout area, the volume can't sustain itself so it must either pull back and/or consolidate. Stocks that usually panic are under $5 and are most ideal when they fall 30/50% in the morning/midday because there is now enough range and time in the day for the stock to bounce effectively. 

One-Day Spikers- Stocks that have no history of running multiple days are very difficult to trade with any confidence because there is nothing from the previous history to reference. Try to stay away from these types of plays as it usually leads to losses. (It is okay to play them if they are big % gainers, just know that they are risky and don't play them the following day, especially if it cannot close green for the day)