How does a Mini RC Helicopter work?

I understand the tail rotor on a "typical" rc or real life helicopter is used to counteract the torque of the main shaft propeller, but that is not the case on a mini helicopter. The rear blade is set up horizontally (controlling pitch), so how does the helicopter stay steady (question 1) and secondly, how does it rotate left and right…this just boggles my mind! Its an small RC Hog Heli w/ two main rotor blades btw.

The 2nd rotor goes counter to the main rotor, which cancels out the torque. To make it turn left or right the counterrotating 2nd rotor is either slowed down to make it turn one way…or sped up to make it turn the other way.

The helicopter can only hover when both rotors are counterrotating to each other the same speed. Vary the speed at all of one of the rotors and then the counterrotating forces are no longer equal and the heli turns in the direction of the lacking torque