The Go2 is the friendliest on-ramp in the Unitree lineup: unbox, charge, pair the app, and you're walking in minutes. The SDK guide in the docs hub covers the deeper work — secondary development, sport modes, and the DDS interfaces.

Used buyers: check all twelve joint motors for smooth motion, verify the battery holds a full charge cycle, and confirm which variant you're getting (the Pro and Edu differ in compute and sensors).