The Pen tool in Adobe Photoshop and Illustrator is a fantastic tool, but using it seems so hard for beginners. Learning and mastering the Pen tool will open the gates for creativity and more control over the design.
The Bezier game is an interactive tutorial specially designed for teaching how to use the Pen tool. The tutorial teaches how to take control of the Pen tool and keyboard shortcuts that will be extremely useful.
Even if you are a Photoshop or Illustrator expert you can test your skills with this interactive tutorial.