In the context of Salesforce, you can locate and utilize the relevant sections of Salesforce commerce cloud documentation for a new feature by using the following steps:-
Access the documentation
First, try to navigate the official Salesforce commerce cloud documentation website which is usually provided by Salesforce.
Use search functionality
Try to use the search functionality on the documentation website. You can enter the keywords which is related to the feature which you implementing.
Navigate to the commerce cloud developer center
Try to visit the commerce cloud developer center and ask for in-depth knowledge about the documentation.
Explore the developer documentation
You can search for the sections in the developer documentation which is related to the feature on which you are working.
Review sample code and examples
Try to review the sample code and examples that are provided in the documentation.
Check the release note
You can check the release note for your particular version of the Salesforce commerce cloud. This would provide you insights about any recent changes, improvements, etc.