I’m currently working on animating a PSD file on after effects. I imported a video into after effects and manipulated it, I’m not sure what I did but out of nowhere the video disappeared. So I went into a subfolder and re added the video there. But once I went back to the whole document, the other video appeared but now I can’t resize them, none of the little square in the corners appear. But when I go into the sub folder it works there, I can resize things. What can I do to be able to resize everything again?
maybe you pressed cmd+shift+H ? This toggles the wireframe views around each object on or off?
Also, you might find this beginner's guide to AE helpful. It's old but it definitely helped me: