Crypto basics: trading pairs and quote currencies
For pairs quoted in stablecoins, the price is roughly equivalent to the price in US dollars, so they’re the most commonly used to see how much a coin is worth.
Before buying or selling, check which trading pair you’re using. Don’t place an order for ETH/USDT when you mean ETH/BTC.
By the way: $BTC is trading at 81500 (24h: -0.46%).
What would you like to learn about next—futures or something else?

Just sharing some thoughts—buy and sell at your own discretion.