While chatting with friends, I realized that quite a few people haven’t got this straight.
Market cap is generally the latest price multiplied by the circulating supply, and it’s the most common way to measure the size of a coin.
High trading volume usually means a deeper order book, so large trades tend to have less slippage; but keep in mind that some platforms may inflate their trading volume.
Today’s price: $BTC is quoted at 77970 (24h +0.036%).
If you know a beginner, feel free to share this with them.

Don’t take this as investment advice.