How to get ZetaChain on MetaMask?

Could you please elaborate on the steps required to acquire ZetaChain tokens on MetaMask? I'm a bit new to the cryptocurrency world and would appreciate a detailed guide. Specifically, I'm wondering if there's a direct way to purchase ZetaChain tokens through MetaMask, or if I need to go through an exchange first. Additionally, I'm curious about the security measures I should take to ensure a safe and secure transaction. Could you also mention any potential fees or charges I might encounter during the process? Thank you for your assistance.