How to use USDT?

Hello there, could you please elaborate on how one might go about using USDT in their cryptocurrency transactions? I understand it's a stablecoin, but I'm not entirely sure how to integrate it into my portfolio management or daily trades. Could you provide some practical examples or scenarios where USDT might be useful, as well as any potential risks or considerations I should be aware of when using it? Thank you in advance for your insight.