Candlesticks and timeframes
Most crypto charts use candlesticks. Each candle shows four prices for one period: open, high, low and close. A green candle closed higher than it opened, a red one lower. The thin lines (wicks) show how far the price moved before it settled. The timeframe decides what one candle means: one hour, one day or one week. Longer timeframes filter out noise.
Volume
Volume shows how much was traded. A move with high volume carries more weight than one on thin trading, because more participants agreed with it.
Support and resistance
Support is a price area where buyers stepped in before, resistance an area where sellers took over. A clean break through such a level often leads to a bigger move. Every asset page on this site marks these levels automatically, and the pivot point calculator and Fibonacci calculator help you find more.
Moving averages
A moving average smooths the price over a number of periods, such as 50 or 200 days. Price above a rising average is generally seen as an uptrend, below a falling one as a downtrend.
RSI
The Relative Strength Index measures the speed of recent moves on a scale from 0 to 100. Above 70 an asset is called overbought, below 30 oversold. These are warnings, not signals on their own. The crypto RSI heatmap shows the RSI of many coins at once, and the technical analysis screener combines several indicators into one rating.
Keep it in perspective
Charts describe the past; they do not guarantee the future. Combine what you see with risk management: decide in advance where you would exit if you are wrong.