How do I buy Chainlink?

Could you please explain the process of purchasing Chainlink? I'm interested in adding it to my crypto portfolio but am unsure of the steps involved. Do I need to register with a specific exchange? Are there any specific requirements or limitations I should be aware of? Also, could you outline the risks involved in investing in Chainlink, as well as any potential benefits? I'd appreciate it if you could provide a detailed yet concise explanation. Thank you in advance for your assistance.