How to perform secondary development and modification of the Zen cart Template

Here is the Zen cart Homepage Program . Modify different functions based on each file. I hope this will help you.
Homepage: // include/templates/zccn/common/tpl_main_page.php
Home Page main style sheet: // include/templates/zccn/CSS/schinese_stylesheet.css
Topic on the left of the homepage:
/Shortdes/templates/template_default/common/tpl_box_default_left.php
Item category content modification:
/Schemdes/modules/sideboxes/categories. php
/Shortdes/templates/zccn/sideboxes/tpl_categories.php
Recommended Products
/Includes/modules/sideboxes/featured. php
/Includes/templates/template_default/sideboxes/tpl_featured.php
New Product
/Shortdes/modules/sideboxes/whats_new.php
/Includes/templates/template_default/sideboxes/tpl_whats_new.php
Special offer
/Shortdes/modules/sideboxes/specials. php
/Includes/templates/template_default/sideboxes/tpl_specials.php
Database Table
/Shortdes/database_tables.php
Modify intermediate items on the home page:
/Schemdes/templates/template_default/common/main_template_vars.php
/Schemdes/templates/template_default/templates/tpl_index_default.php
Modify the product in the middle of the page:
/Schemdes/templates/template_default/templates/tpl_index_catergories.php
New August product in the middle of the homepage
/Schemdes/templates/template_default/templates/tpl_modules_whats_new.php
August
/Schemdes/templates/template_default/templates/tpl_modules_specials_default.php
Recommended items on the homepage
/Schemdes/templates/template_default/templates/tpl_modules_featured_products.php
On the Right of the homepage:
/Shortdes/templates/template_default/common/tpl_box_default_right.php
Product Search
/Includes/templates/template_default/sideboxes/tpl_search.php
Customer Service Center
/Includes/templates/template_default/sideboxes/tpl_ezpages.php
Best-selling products
/Includes/templates/template_default/sideboxes/tpl_best_sellers.php
Product comments
/Includes/templates/template_default/sideboxes/tpl_reviews_write.php
Online list
/Includes/templates/template_default/sideboxes/tpl_whos_online.php