How do I buy ORN?

I'm interested in purchasing ORN, but I'm not sure how to go about it. Can you walk me through the process of buying ORN? What exchanges or platforms support the trading of ORN? Are there any specific steps I need to follow to ensure a smooth and secure transaction? Additionally, are there any fees associated with buying ORN that I should be aware of? I'd appreciate any guidance you can provide on this matter.