How to buy Cardano (Ada) on Coinbase?

Hello, could you please elaborate on the steps involved in purchasing Cardano (ADA) on Coinbase? I'm interested in understanding the entire process, from setting up an account to successfully making the purchase. Specifically, I'd like to know if there are any prerequisites or verifications required before I can begin trading. Additionally, is there a minimum investment amount for purchasing ADA, and what are the associated fees or commissions? Finally, could you also provide any insights or recommendations on how to store and manage my ADA securely after purchase? Thank you for your assistance in guiding me through this process.