How do I buy dYdX?

Could you please elaborate on the process of purchasing dYdX? I'm a novice in the world of cryptocurrency and would appreciate a step-by-step guide. Specifically, I'm interested in knowing the platforms or exchanges where dYdX is available, the necessary requirements or accounts I need to set up, and any additional fees or considerations I should be aware of. Additionally, would you recommend any safety measures or best practices to ensure a secure and smooth transaction? Your guidance would be invaluable in my journey of exploring and investing in this digital asset.