How do I buy Binance Smart Chain?

As a crypto enthusiast, I'm curious about the process of acquiring Binance Smart Chain tokens. Could you elaborate on the steps involved? I've heard that it involves setting up a crypto wallet and potentially purchasing another cryptocurrency to trade for BSC. But I'm not entirely sure where to start or what platforms offer the most secure and efficient means of acquisition. Additionally, I'm also wondering about the associated costs and fees involved in the process. Could you provide a comprehensive overview of the entire process, from start to finish, including any recommendations for reliable platforms and tips to ensure a smooth transaction?