If you want to bring your 3D model to life, you can use bones and animate them to make the 3D model move. Each bone has a limited amount of influence on the 3D model and it pivots on one end, just like most of our bones do.
This method of 'rigging' (creating a skeleton to animate your object) is super fast and easy. It has it's limitations, but it's good for simple poses and animations. It's based on a great and funny tutorial by Ian Hubert.
add > armature. This adds the armature object and a single boneshift + a) parent them to the other bones . Choose with offset when you want empty space between them, or choose connect when you want them to mesh together.with automatic weights.