Here are the steps to place an order on Alibaba:

1. Open the Alibaba website and log in to your account.

2. Enter the keywords of the product you want to buy in the search box and click "Search".

3. On the search results page, filter the price, brand, material, color and other attributes of the product you want.

4. After finding the product you want, click the "Buy Now" button or the "Add to Cart" button.

5. If you choose "Buy Now", you need to fill in the purchase quantity and other relevant information, and then click "Submit Order".

6. If you choose "Add to Cart", you can continue to browse other products, and then confirm your purchase quantity and product specifications on the shopping cart page, and then click "Checkout".

7. On the checkout page, you need to fill in the details such as consignee information, invoice information, payment method, etc.

8. After confirmation, click "Submit Order".

9. After completing the payment, you will receive an order confirmation email and a shipping notice.

10. Wait for the product to be shipped and after receiving it, confirm whether the product meets your requirements.

The above are the general steps for placing an order on Alibaba. The specific operations may vary depending on the product. If you have any questions, please contact the seller or Alibaba customer service staff.