How do I buy from CoinGecko?

Could you please explain to me how exactly I can purchase cryptocurrencies through CoinGecko? I'm quite new to this space and would appreciate a step-by-step guide. For instance, do I need to create an account first? Are there any specific payment methods accepted? Also, how secure is the platform when it comes to transactions and protecting my personal information? I'd like to make sure I'm doing this safely and efficiently. Thank you in advance for your assistance.