Could you please elaborate on the steps involved in purchasing BitTorrent coin? I'm new to this process and would like a comprehensive overview. Firstly, which cryptocurrency exchange platforms support the trading of BitTorrent coin? Secondly, what are the necessary requirements to set up an account on these platforms? Additionally, how do I ensure the safety of my transactions and funds? Moreover, are there any fees or commissions involved in the buying process? Finally, what is the typical turnaround time for completing a BitTorrent coin purchase? Your insights would be greatly appreciated.