The primary component for Turtle trend following is the price. You do not need to interpret a chart to make a decision when trading as Turtle. Charts are used on the TurtleTrader site to show example wins. Technicians sometimes equate studying stock charts to a surgeon looking at x-rays before operating on a patient. This is not true.
Technical analysis is very subjective.
If you are a novice and want to trade using technical analysis, you should take it slowly and learn what tools are available to get a sense of what works and what doesn't. Turtle trend following is objective, not subjective. You can define it. Support is the price level at which a stock's price has stopped falling and has either moved sideways or reversed direction. At this level, the demand for the stock is thought to be strong enough to prevent the price from dropping further.