How do I sell USDT?

I'm a bit new to the world of cryptocurrencies, and I've been holding some USDT for a while now. But recently, I've decided that I want to sell it and cash out. Could you guide me through the process? I'm a bit overwhelmed with all the exchanges and wallets and don't quite know where to start. What are the steps I need to take? Are there any fees or taxes I should be aware of? And how do I ensure the safety of my transaction? I'd really appreciate your help in navigating this!