As you might expect from a powerful e-commerce system such as Magento, there are tools to help make your job as a Magento theme developer easier. One of the most useful tools for theme developers is Template Path Hints, which tells you where each block's template in your Magento store's page is stored in your Magento theme directories.
To enable this tool, navigate to System | Configuration in your Magento administration panel and change the Current Configuration Scope field's value to your store view's value. In the example in the following screenshot, you can see this being set to Default Store View:
Now, select the Developer tab towards the bottom of the list grouped under ADVANCED:
Expand the Debug panel and you are now presented with a selection of options; set the value for the Template Path Hints field to Yes, as seen in the following screenshot (you may need to uncheck the Use Website checkbox before you can do this):
