Improve The Explanations

[nishantc1527]

This one is a really good place to start. So while reading the explanations, you might've noticed, I'm no author. There might be some typos or formatting error, and you can fix it if you want. You can also improve the explanation for more points, if my explanation was bad.

Points: 5 - 10 points for a typo or formatting issue, and 5 - 30 points for an improvement in explanation.