Update help center content readme file download procedure

README.md

@@ -1,7 +1,41 @@
 # help-center-content
+
 Repository assembling VTEX's Help Center content
 
+## In this repository
+
+You will find the following folders in this repository:
+
+-TBD
+
+## Contributing with Help Center Portal documentation
+
+We're so glad you're here! Thanks for being interested.
+
+### How do I add a download file to my article?
+
+1. Open a branch in the [help-portal-content](https://github.com/vtexdocs/help-center-content) repository.
+2. Copy the file you want to make available for download to the same directory as the article where it will be inserted. For instance, to allow the user to download a spreadsheet within the article **[Payment Provider List](https://github.com/vtexdocs/help-center-content/blob/b454803127cc490362c16921ceee023a5d182409/docs/pt/tutorials/Payments/Payment%20Settings/list-of-payment-providers-by-country.md)**, you need to save it in the directory [vtexdocs/help-center-content/docs/pt/tutorials/Payments/Payment Settings](https://github.com/vtexdocs/help-center-content/docs/pt/tutorials/Payments/Payment_Settings/).
+3. Go to the [branches page](https://github.com/vtexdocs/help-center-content/branches), and under **Your branches** section, click on the name of the branch you created.
+
+![Branches_page](https://raw.githubusercontent.com/vtexdocs/help-center-content/readme-download-illustration-1.png)
+
+4. Locate the folder where you saved the file and click on it.
+
+![File_folder](https://raw.githubusercontent.com/vtexdocs/help-center-content/readme-download-illustration-2.png)
+
+5. Right-click on the **Raw** option and select **Copy link address (Copiar endereço do link)**.
+
+![Raw_link_information](https://raw.githubusercontent.com/vtexdocs/help-center-content/readme-download-illustration-3.png)
+
+6. Access the article where you want to add the file and insert the link obtained in the previous step in the desired location.
+
+![Add_link_in_article](https://raw.githubusercontent.com/vtexdocs/help-center-content/readme-download-illustration-4.png)
+
+7. Submit your PR for review.
+
 ## Track articles
+
 Track articles' titles must contain the reference numbers in the navigation, but not in the title of the article page.
 
 ![image](https://github.com/user-attachments/assets/7409460d-e3b7-473b-8945-f7ff3faa6862)