Official docs outline
8 sections- WPF overview
Architecture, XAML, controls and rendering model.
- XAML in WPF
Markup syntax, namespaces, markup extensions and code-behind.
- Data binding
Binding sources, DataContext, templates and validation.
- Controls
Built-in controls, content model and control templates.
- Layout
Panels, measure and arrange, Grid and StackPanel.
- Control customization
Styles, templates and triggers.
- Graphics and multimedia
2D graphics, animation, imaging and media.
- Routed events
Bubbling, tunneling and event handlers.
Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.