Most of the time, you'll be able to do this by clicking the Move tool in the palette (shortcut key: V). For some (such as the Type tool), you'll need to click the Checkmark or the Cancel icon in the toolbar at the top.
Product Integration Manager, Creative Cloud Learning & Training
Thank you very much! First mystery solved.
Is there a tutorial for things of this nature?
I'm an absolute noob.
We don't have a tutorial specifically for this, but we have set up a video-based learning path here. In particular, the videos under Photoshop Workspace(granted that some are a bit old) should help you out.