Key Indicators, Explained Properly

Indicators are mathematical calculations plotted on a chart to highlight something price alone doesn't show clearly. Here are the three most widely used — and, just as important, how they're commonly misused.

Moving Average — smoothing out the noise

A Moving Average (MA) plots the average price over a set number of recent periods (e.g., 50 days), updating as new data comes in. It smooths out short-term noise, making the underlying trend easier to see.

When price is above its moving average, that often signals an uptrend; below often signals a downtrend. When a shorter MA crosses above a longer MA, that's often called a "golden cross," commonly read as a bullish signal — the reverse is a "death cross," commonly read as bearish.

RSI — measuring how "stretched" a move is

The Relative Strength Index (RSI) measures how fast and how far price has recently moved, on a scale from 0 to 100. Readings above 70 are commonly considered overbought (price may have risen too far, too fast); below 30 is considered oversold (price may have fallen too far, too fast).

MACD — comparing two moving averages

The MACD (Moving Average Convergence Divergence) compares two moving averages of different lengths, helping traders spot shifts in momentum earlier than a single moving average alone might show.

The proper way to use indicators — an honest warning

The single most common beginner mistake is treating any one indicator as a guaranteed signal. Indicators are best used together, and alongside the price action and support/resistance covered in Lesson 3 — not as a standalone "buy here, sell here" machine. An RSI reading of 75 doesn't mean "sell immediately" — it means "worth paying closer attention," combined with everything else you're seeing on the chart.