Start learning about basic electronics and robot behaviour. By connecting two sensors to the motors (using the motor controller) one can build a robot that reacts to the sensors. Moving away from or towards the light, or not bumping into obstacles.
MIRTE Basic
Learn about software (block-based and Python). By adding a microcontroller one can create more complex behaviours and use more sensors.
MIRTE Pioneer
Explore all robotic possibilities. By adding a computer one can use even more sensors (camera, but even lidar) and a gripper. Apart from programming in blocks and Python, one can also use all possibilites of Robot Operating System (ROS).