How do I buy bittensor?

Could you please elaborate on the process of purchasing Bittensor? I'm interested in understanding the steps involved from start to finish. Could you guide me through the necessary platforms or exchanges where I can find and buy Bittensor? Additionally, are there any specific requirements or prerequisites that I need to fulfill before making the purchase? Also, would you recommend any safety measures or tips to ensure a secure transaction? Thank you for your assistance in this matter.