Where can I buy $link?

Excuse me, I was wondering if you could provide me with some guidance. I'm interested in purchasing some $link tokens, but I'm not quite sure where to go about doing that. Could you please point me in the right direction? Are there any specific exchanges or platforms that you would recommend for buying $link? Additionally, are there any important factors I should consider before making a purchase, such as fees, security, or liquidity? Thank you for your help!