How do I get BEP20 tokens on MetaMask?

I'm curious about how I can acquire BEP20 tokens on MetaMask. Could you walk me through the process step-by-step? I'm a bit new to this and want to make sure I'm doing it correctly. Do I need to add a custom network? Are there any specific wallets or exchanges I should use? And once I have the tokens, how do I manage them securely within MetaMask? I appreciate your help in navigating this process.