How to purchase Luna?

Could you please elaborate on the steps involved in purchasing Luna cryptocurrency? I'm new to this space and would appreciate a concise yet thorough explanation. Where can I find a reliable exchange to buy Luna? What factors should I consider before making a purchase, such as the current market conditions, trading fees, and security measures? Additionally, is there a minimum investment amount required, and what payment methods are typically accepted? Thank you for your guidance in navigating this process.