According to the Chart School from Stockcharts.com, a bull set-up from stochastic full is basically the inverse of a bullish divergence. The underlying security forms a lower high, but the Stochastic Oscillator forms a higher high. Even though the stock could not exceed its prior high, the higher high in the Stochastic Oscillator shows strengthening upside momentum. The next decline is then expected to result in a tradable bottom.
Horizontal lines and zones are supports (entry for bulls and exit for bears) and resistances (exits for bulls and entries for bears). Diagonal lines from Fib fan/channel are for trend-determination and additional levels for active trading. The market is actively moving so the entries and exits constantly change. Trade small if you want to practice!