How to buy Navi protocol?

Hello there, I'm curious about the process of purchasing Navi protocol. Could you please walk me through the steps in detail? Are there any specific exchanges or platforms that I should use to buy Navi? Also, are there any fees or commissions associated with the purchase? Additionally, is there a minimum amount that I need to invest in order to buy Navi protocol? I'd appreciate any insights or tips you have to offer on how to safely and securely buy Navi protocol. Thank you in advance!