The official tutorial for Angular does a great job of getting you started by walking you through the construction of a online catalog web app. From their website:

When you finish the tutorial you will be able to:

• Create a dynamic application that works in any browser.
• Define the differences between Angular and common JavaScript frameworks.
• Understand how data binding works in AngularJS.
• Use the angular-seed project to quickly boot-strap your own projects.
• Create and run tests.
• Identify resources for learning more about AngularJS.