Beginner level:

1. What is WordPress and why use it?
2. Setting up a WordPress website and understanding its structure
3. Choosing and installing a WordPress theme
4. Customizing WordPress themes with CSS and PHP
5. Working with WordPress plugins
6. Creating and managing posts, pages, and menus in WordPress
7. Managing media files in WordPress
8. Understanding WordPress permalinks and SEO
9. User management in WordPress
10. Backing up and restoring WordPress websites

Intermediate level:

1. Creating custom post types and taxonomies in WordPress
2. Advanced WordPress theming with template files and functions
3. Creating and working with child themes in WordPress
4. Creating custom WordPress plugins
5. Working with WordPress APIs and integrating with third-party services
6. Advanced media management in WordPress
7. Managing comments in WordPress
8. Understanding WordPress security and implementing best practices
9. Speed optimization techniques for WordPress websites
10. Multilingual WordPress websites with WPML

Advanced level:

1. Customizing WordPress with hooks and filters
2. Advanced WordPress plugin development
3. Working with custom fields in WordPress
4. Customizing the WordPress admin area
5. WordPress Multisite, managing multiple WordPress websites
6. Building e-commerce websites with WooCommerce
7. Creating membership websites with WordPress
8. Advanced SEO techniques for WordPress websites
9. Integrating WordPress with CRM and marketing automation tools
10. WordPress performance tuning and scaling.