Can you sell USDT to USD?

Excuse me, I'm quite new to the world of cryptocurrency and finance, so I'm seeking some clarification here. I've been hearing a lot about USDT and USD, but I'm still a bit hazy on the details. Could you possibly explain to me if it's possible to sell USDT and convert it into USD? I understand that USDT is a stablecoin pegged to the US dollar, but I'm not sure how the conversion process works. Could you walk me through the steps involved, or perhaps point me to a reliable resource that can help me understand this better? Thank you in advance for your assistance.