Contribution

• Set up development environment
• Our Git Flow
• SCSS and JS minification
• Naming conventions
• CSS SASS coding guidelines and naming conventions
• Critical Flows
• API Critical Flows
• String localisation guidelines
• Translating WooCommerce
• Deprecation in core
• Adding Actions and Filters
• Common Issues
• Writing high-quality testing instructions

Release Notes

• Release Testing Instructions
• 3.6.x notes/FAQ
• 2.6.x to 3.0.0 Developer Migration Notes
• Select2 fields not working in 3.0.x
• Thumbnail Image Regeneration in 3.3
• Customizing image sizes in 3.3

REST API and CLI

• Getting started with the REST API
• Contributing to the REST API
• WC CLI Overview
• WC CLI Commands

CRUD & Data Descriptions

• Database Description
• CRUD Objects in 3.0
• Order and Order Line Item Data
• Coupon Data
• Customer Data
• Product Data
• Data Stores

Internal APIs

• Settings API
• Payment Token API
• Shipping Method API
• WC_Queue - WooCommerce Queue API

Theming

• Enabling product gallery features (zoom, swipe, lightbox)
• Template File Guidelines for Devs and Theme Authors

Examples / Guides

• How Taxes Work in WooCommerce
• Customising account page tabs
• End-to-end Testing
• wc_get_orders and WC_Order_Query
• wc_get_products and WC_Product_Query
• Importer and Exporter
• Testing Action Scheduler
• Core Profiler Testing Instructions