Three Rules of the English Language

It is time you finally learned those grammar rules that never really made sense before.

1. Fewer vs. less: This rule, for some reason, has become my absolute pet peeve. It’s not that hard, people. If you can count it, use ‘fewer.’ If you can’t, it’s ‘less.’ I’ve had teachers make this mistake before (though thankfully not any English teachers) and it takes all my willpower not to correct them. I hope in the coming years, fewer people will make this mistake, and I will lose less sleep over it. (See what I did there?)
2. Superlatives and comparatives: If you compare my sister and me, you will find that I am not the smartest. I am, however, the smarter. This is not so difficult to wrap your mind around—between two things, you use the comparative case (usually the adjective ending with –er, or in irregular cases, you would use “more ____”). With three or more things, you use the superlative (--est, or “most____”). Then you can be the best at grammar! Or if it’s just a contest between you and your brother, you can be the better.
3. Whose/who's: Obviously this error only pertains to written word, but it still bugs me. Guys, it's just like the its/it's rule. If you want to say "who is," then use "who's." If you're going for a possessive form of "who" then use "whose." Who's going to be my lab partner, and whose house can we work at?