How do I buy a Bitcoin (BTC)?

As a novice investor in the cryptocurrency space, I'm curious about the process of purchasing Bitcoin, also known as BTC. Could you please elaborate on the steps involved in acquiring this digital asset? I'm specifically interested in understanding how to set up a digital wallet, choose a reliable exchange platform, and execute a safe and secure transaction. Additionally, I'd appreciate any insights on factors to consider while making this purchase, such as transaction fees, exchange rates, and potential risks involved. Your guidance in this matter would be greatly appreciated.