The steps for Taobao sellers to join Taobao Affiliate Promotion are as follows:

1. **Meet the conditions**: First, sellers need to meet certain conditions to join Taobao Affiliate Promotion, such as the store level reaching one heart or participating in the consumer protection plan, the number of goods sold normally in the store exceeds 10, and the store's dynamic score is not less than 4.5.

2. **Log in to Qianniu Workstation**: Use the seller account to log in to Taobao's Qianniu Seller Workstation.

3. **Enter the promotion section**: Find "Marketing Center" in the Qianniu Workstation, and then select "I want to promote".

4. **Select Taobao Affiliate**: Find and click "Taobao Affiliate" in the promotion options to enter.

5. **Sign the agreement**: Read and sign the Taobao Affiliate Promotion Agreement and the Alipay Withdrawal Agreement. These agreements allow the system to automatically deduct the corresponding commission from the seller's Alipay account after the promotion is successful.

6. **Enter the merchant backstage**: After signing the agreement, enter the merchant backstage of Taobao Alliance.

7. **Set up a promotion plan**: Set the promotion commission for the product in the "Plan Management" of the Taobao Alliance backend. You can set up different types of promotion plans, including general plans, targeted plans, self-selected plans, and marketing plans.

8. **Select products**: Select the products to be promoted in the plan management, and set the corresponding commission ratio.

9. **Submit for review**: After the settings are completed, submit the promotion plan for review.

10. **Manage promotion**: After the review is passed, sellers can start managing their own Taobao promotion activities, monitor the promotion results and adjust the promotion strategy as needed.

Sellers can use the Taobao Alliance platform to select the products to be promoted, set the commission ratio, and use Taobao's promotion channels to increase the exposure and sales of the products. Taobao promotion is a marketing method that pays per transaction. Sellers only need to pay commissions after the products are sold through Taobao's promotion links. This model is low-risk for sellers and is an effective means of attracting traffic and sales.