Where can I buy OctaSpace?

Excuse me, I'm new to the world of cryptocurrency and I'm interested in purchasing OctaSpace. Could you please tell me where I can find a reputable exchange or platform to buy this particular digital asset? I've done some research but I'm still a bit unsure of the best place to go. Is there a specific exchange that's known for its security and ease of use when it comes to trading OctaSpace? Or perhaps there's a comprehensive guide or list of recommended platforms that I can consult? Thank you in advance for your help.