How do I buy BNB BEP2?

Could you kindly enlighten me on the process of purchasing BNB BEP2? I'm a bit confused about the steps involved. Could you provide a step-by-step guide, maybe starting with choosing a suitable exchange or platform? Also, are there any specific requirements or prerequisites I should be aware of before making the purchase? Additionally, how do I ensure the safety and security of my transaction? It would be great if you could offer some insights on these matters. Thank you in advance for your assistance.