What is the fastest way to buy BNB?

I'm curious, could you please tell me what is the fastest way to purchase BNB? I've been hearing a lot about it and am eager to get started, but I'm not sure which platform or method offers the quickest and most convenient transaction. Would it be through a centralized exchange, a decentralized exchange, or perhaps a peer-to-peer platform? Also, are there any specific steps or considerations I should keep in mind to ensure a smooth and secure transaction? I'd appreciate any insights you can provide.