1강:
https://www.youtube.com/watch?v=5UjgSlv4Q7A
2강:
https://www.youtube.com/watch?v=0MAPn5QU2Co
3강:
https://www.youtube.com/watch?v=y9HI0v821Vc
4강:
https://youtu.be/i4krTvlK45M
5강
https://youtu.be/dU3OKJmOf0c
6강
https://youtu.be/Bhn_vT2wmzg