[mgarciah]

Ok, #1, yes, you can fly at will with this tiny things, but indoors. (but you need to add some weight at the nose to go forward,see below)
#2 Here the Piccoz use a physical theory called torque-induced precession, the Picooz rotor is not design to go forward or backwards as normal helicopters, it just gives you more or less lift, but it has a second upper blade which balance the flight and keeps the heli stable.
Hold the Piccoz in your hand, apply throttle an move the nose down, this is a normal tendency when you go on normal flight, look the upper blade it will try to react against the movement due the theory mentioned above, this feedback reaction gives you the control to fly, but in order to go forward you have to add some weights at the nose to force this reaction. the good news is that the torque preccesion ends when you change the nose direction 180 degress and starts to build it up again, so you can actually stop and go at will (just change the nose direction)