Margin trading is to trade on crypto markets with leverage or borrowed funds, while only exposing a smaller amount of your own capital. Margin is the amount of crypto you need to enter into a leveraged position.
To go long: In Margin trading, long refers to buying at a low price and then selling at a higher price. In this way, you can earn a profit from the price difference.
To go short: In margin trading, short refers to selling at a high price rather than buying at a lower price. In this way, you can earn a profit from the price difference.