Where can I buy Num coin?

Excuse me, I'm interested in purchasing Num coin, but I'm not sure where to start. Could you please guide me on the best platforms or exchanges where I can safely and securely buy Num coin? Are there any specific requirements or steps I need to follow to make the purchase? Additionally, are there any fees or commissions associated with buying Num coin on these platforms? I'd appreciate any insights or recommendations you have to offer.