How to use bit buy?

Excuse me, could you please elaborate on how one might go about using Bit Buy to their advantage? I'm quite interested in the platform but am unsure of the specific steps involved in making transactions or navigating its interface. Is there a particular guide or tutorial you could recommend for beginners like myself? Additionally, I'm curious about the fees associated with using Bit Buy and whether there are any security measures in place to protect users' funds and personal information. Could you provide some insights into these aspects as well? Thank you in advance for your assistance.