In my human walk animation, when I play the animation, only the bones of the human move. How do I link the bones to the body so everything moves together?
This is an addition to @Denis 's answer.
There are other armature deform options, but with automatic weights looks like it's the most reliable with empty groups weights in a close second. It all just depends on how you want your mesh to deform. I made a turkey to show you:
here is the article to look to for a run-down on armatures, by yours truly.