Moving Bones

There must be something extremely obvious and simple here that I’m missing, but if there is, I can’t find it. For some reason I can’t figure out how to select and move individual bones. Right clicking selects the whole set of bones, and if I double tap r it rotates the whole character. I want to be able to angle only the head, arms, etc. What am I doing wrong?

Are you in object mode? Right click the armature, press Ctrl+Tab to toggle between pose mode and object mode.