Where can I buy HTR?

Excuse me, I've been hearing a lot about HTR recently and I'm quite intrigued. Could you possibly tell me where I can purchase some HTR? I've tried searching online but there seems to be a lot of different platforms and exchanges, and I'm not sure which one would be the most suitable or secure for making such a transaction. Could you provide me with some guidance or recommendations on where to go to buy HTR? Thank you in advance for your help.