How to buy BNB for 1 dollar?

I'm quite curious about cryptocurrency trading, and I've been hearing a lot about BNB recently. Could you please tell me how to buy BNB for just 1 dollar? I'm a beginner in this field and want to start small to understand the ropes. I've heard that BNB has good potential for growth, and I'm excited to get involved. Could you guide me through the process step by step? I'm not sure which platform to use or how to set up an account. Also, would it be possible to buy just a small amount like 1 dollar? I'm eager to learn and invest, but I don't want to jump into anything too big initially. Thank you for your help!