I have little understanding of the numbers, but a wide and deep reading of news and events around the world - so I concentrate on trading the news and fundamentals, and just use the charts to pick entry points, really.
The trades that have made me the most money seem to boil down to:
1. Observe a long term trend (think; weeks or months)
2. Punt in the same direction as the trend
3. Apply a sensible trailing stop
4. Go to sleep
Thoughts and suggestions appreciated.