To animate armature 3D models fast, use preset animations, keyframe copying, and inverse kinematics (IK) in 3D software to reduce manual work.
Presets (e.g., walk cycles, jumps) reuse common motions instead of building from scratch. Keyframe copying repeats actions like waving without redrawing frames. IK automates bone movement—adjust a hand’s position, and the arm bones update automatically.
For beginners, start with Blender’s "Action Library" for presets or add IK constraints to limbs first—this lets you focus on refining details rather than creating every movement from zero.