How do I buy XRP on Coinbase?

Could you kindly explain the process of purchasing XRP on Coinbase? I'm quite new to cryptocurrency and am looking for a straightforward approach to acquire some XRP tokens. Would it involve setting up an account first? And what payment methods are accepted for this purchase? Also, is there a minimum amount I need to invest in order to buy XRP? And how secure is the platform when it comes to transactions and storing my digital assets? Your guidance would be much appreciated.