Welcome to the Treehouse Community
The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.
With the Pen tool selected, hit the key and you will see the Add Anchor Point tool selected.
i don't know what to do
With the pen tool selected, try typing the letter "p". It should switch back to the regular tool, indicated by the little star next to it. You can quickly switch between regular pen tool, adding, and subtracting points with "p", "+", and "-" respectively (though you don't need to hold down shift).
Hope that helps. If not, please give more info (like which key you're hitting), and I'm sure we'll get you the answer you need.