How to buy BNB Smart Chain in usa?

Could you please elaborate on the steps involved in purchasing BNB Smart Chain in the United States? I'm particularly interested in understanding the initial setup process, including the necessary accounts and platforms to utilize. Additionally, I'd like to know about the safety measures to take to ensure secure transactions. Additionally, I'm curious about any specific fees or limitations I should be aware of when purchasing BNB Smart Chain in the US. Your guidance would be greatly appreciated in navigating this process.