Hello.Im New Here I Want to Make Some Questions?

first.i dont know if all of you have played watch dogs or seen the movie whoami but can you really make a city blackout.

second.im 19 if i start to learn well from OTWs articles,how long would it take for me to start hacking.

third.what is the difference beetwen the black hat and the white does the black hats know more things then the white hats or does they just use those commands for bad things