How to buy 1 BNB?

Could you please elaborate on the steps involved in purchasing one unit of BNB? I'm particularly interested in understanding the prerequisites for making such a purchase, as well as the specific platforms or exchanges where I can buy BNB. Additionally, I would like to know about any potential fees or charges associated with the purchase, and any safety measures I should take to ensure a secure transaction. Could you also provide any insights on the current market conditions for BNB and any potential risks involved in investing in it? Thank you for your assistance in guiding me through this process.