How to buy Chainlink?

How can I acquire Chainlink? I'm really interested in exploring the cryptocurrency world, but I'm a bit new to it. Could you please provide a step-by-step guide on how to purchase Chainlink? What exchanges should I consider? Are there any specific requirements or prerequisites I need to fulfill? Also, could you explain the risks involved in investing in Chainlink? I'd appreciate any advice or insights you could share. Thank you in advance for your help!