How do I buy Santos shares?

Hello there, I'm interested in purchasing shares of Santos, a company I've been eyeing for some time now. Could you please guide me through the process of buying these shares? I'm not very familiar with the intricacies of stock trading and would appreciate a step-by-step explanation. Additionally, what factors should I consider before making this investment? Are there any potential risks or benefits I should be aware of? I'm looking forward to your insights.