How do you read a candlestick chart?

The thick part is the body. It goes from the open to the close. The thin lines above and below are the wicks. They show how far price stretched before it was pushed back.

A green (or hollow) candle closed higher than it opened. A red (or filled) candle closed lower.

One candle is a clue, not an answer. Candles mean more when you read them next to the trend and nearby support or resistance.