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.
I invest in companies with strong fundamentals which are also significantly undervalued, presenting a good margin of safety. I write extensively about my ideas and investment strategies on my blog at Soberstocks.com