How to add degen chain to MetaMask?

Can you explain the process of adding a degen chain to MetaMask in simple terms? I'm a bit new to this and I'm not sure where to start. What kind of information do I need to have on hand before I begin? Are there any risks or potential issues I should be aware of? And once I've added the chain, how do I use it for transactions and other activities on the blockchain? Thank you for your help!