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Difficulty level (1-10): 
I hope the git part gets easier upon subsequent challenges. What was the challenging part here for you?
Are you on Windows/Unix? Sometimes the former makes this a bit more challenging for people because they need a tool like git bash, cygwin or cmder.
Anyways, once you get it working it's a nice way to submit code without asking you for write access to your Github account. Hope to see you on more challenges.
Once you have your fork cloned to your machine subsequent challenges should be easier. I just did this for our new NLP challenge #58:
In my cloned fork directory:
TODO ... do challenge work ...
When I am done coding I would send the changes to my fork: