Ok this is quite odd you would think I would know something so simple by now but I somehow closed my project panel and now I can't find how to reopen it. It doesn't appear to be in the window list of panels? How do I get it back please? I tried to rest workspace but still I can't see it. Its usually top left next to effect controls.
You can always just save/quit/relaunch.
In the future, you can save your window layout (see the manual) and then recall that setup at any time.
Umm, I don't have AE on they machine so I can't check this (going from memory) there'a a little icon in the upper right corner on the timeline that will open your project panel.
sorry for the disinformation. Just fired up AE on another machine. Aling the top edge of the main window, you should see a text element that reads "Workspace:" Next to that is a drop down menu for panels. Choose "All Panels."