How do I buy Ocean cryptocurrencies?

Could you elaborate on the process of purchasing Ocean cryptocurrencies? I'm interested in understanding the steps I need to take to successfully acquire some of these digital assets. Do I need to register with a specific exchange? Are there any minimum purchase requirements? What about security measures? Are there any risks I should be aware of before making a purchase? Additionally, is there a recommended wallet to store my Ocean cryptocurrencies securely? I'd appreciate a detailed explanation of the entire process from start to finish.