How can I buy BTC ETF?

Could you kindly elaborate on the process of purchasing a Bitcoin Exchange-Traded Fund (BTC ETF)? I'm particularly interested in understanding the steps involved, including choosing a broker or exchange, setting up an account, funding it, and finally executing the trade. Additionally, are there any specific regulations or limitations I should be aware of when purchasing a BTC ETF? It would be helpful if you could provide any insights or advice on how to navigate this process smoothly and safely. Thank you for your assistance.