Some tricky related computer

Links of Videos:
1.) How to change color of your cmd screen 
https://www.youtube.com/watch?v=VF28mPgkFRs

2.) How to shutdown your freinds computer
https://www.youtube.com/watch?v=-oEj7jCkL2s

3.) How to access your freinds computer
https://www.youtube.com/watch?v=Qlg9JRCWZ8E

4.)How to turn of your computer using mobile
https://www.youtube.com/watch?v=zqbKmMio8rM