How do I place an order on Ali?

Excuse me, I'm new to using Ali and I'm a bit confused about how to place an order. Could you please walk me through the process step-by-step? Specifically, I'm wondering where I should go to select the product I want, how to add it to my cart, and what payment options are available. Additionally, I'd like to know if there are any discounts or promotions I should be aware of before completing my purchase. Lastly, could you tell me how to track my order once it's been placed? I appreciate your help in navigating this process.