How do I buy PETH?

Sure, here's a description in the tone of a questioner, based on the paragraph "How do I buy PETH?": "I'm interested in purchasing PETH, but I'm not sure how to do it. Could you please walk me through the process? What steps do I need to take to buy PETH? Do I need to set up a cryptocurrency wallet first? Are there any specific exchanges that I should use to buy PETH? Is there a minimum amount that I need to purchase? And lastly, what are some things that I should keep in mind when buying PETH?