Oh no!
The title of this page contains a typo.
Instead of Tutrial, it should say Tutorial.
Fortunately, since this project is hosted on github,
you can use git to fix this mistake for me.
Follow the 5 step procedure in the figure below to submit a pull request that fixes this typo.
NOTE: If you would like more detailed written instructions, you can follow this seven step procedure.
Since everyone is submitting the same pull request for an intentionally made typo, I will not accept your pull requests. But, if you ever find mistakes in any class repo, please submit a pull request. I will accept the pull request and give you extra credit. Then everyone will have the benefit of having the mistake fixed.