Add a resource for tutorials which include the enclosed tutorials

[ejcer]

https://manual.cs50.net/seminars/

https://www.youtube.com/channel/UCgxzjK6GuOHVKR_08TT4hJQ/videos

http://nodeschool.io/

http://www.raywenderlich.com/tutorials

https://www.codecademy.com/learn

https://realpython.com/blog/