Buy and hold died. Follow the gurus cautiously. Some are blind. Buy dips. Buy momentum. Market is unknowable. Food always in demand. Energy too. Charts are like statistics: they can say whatever you want. Momentum + price action for swing trading.
Computer Science Major; Mostly trade stocks; I use chart and price action to decide entry and exit points. The market has been good to me and it can also be good to you if you know how to navigate it.