Trendlines are straight lines drawn on a chart to connect successive price points, helping visualize the direction of a trend. Channels consist of a pair of parallel trendlines — one connecting highs and the other connecting lows — which define the upper and lower boundaries of a price movement. These tools are vital for identifying bullish or bearish momentum and spotting trend reversals. Trendlines act as dynamic support and resistance levels. If a stock price consistently touches a trendline and bounces, that trendline becomes a reliable guide for future price action. Channels help traders make informed decisions about entry, stop-loss, and exit targets. Understanding slope, touchpoints, and breakouts from these lines is critical. This lesson provides a step-by-step approach to drawing accurate trendlines and recognizing various types of channels like ascending, descending, and sideways. Real-time TradingView illustrations and case studies from NSE/BSE stocks are covered to ensure practical learning.