When you edit views, make sure that you edit them for your front end template, otherwise, you want see any change.
There is no documentation to say which view file is for which page.
Most of the time, it's quite straight forward:
product/listing -> listing of products
product/show -> details page of a product
category/listing -> listing of categories
Then, you have a view files like listing_div and listing_table which are used based on whether you selected the layout to be DIV or table in your module/menu's options.
If you choose DIV, you can also select the item box layout. So if you select "image and title", it's the file listing_img_title which will be used. If you choose "image and description", it's the file listing_img_desc.