If you are taking a class voluntarily over the Internet, what benefit would be gained by cheating? I presume that a large fraction of people who are doing volunteer coursework are doing it to learn, not to keep a GPA up for some other reason (sports eligibility, scholarship requirements, parental expectations, Etc.) so looking at other solutions on Github might actually enhance the experience for you if you look at other solutions. If you find a way to do it better than the other solutions that could be a goal in itself.

This is one of those things I find most intriguing about 'free' classes on the Internet, the value equation is shifted around.