For some of us, grade-school grammar lessons haven’t stuck. I managed fairly well with my trusty Elements of Style until pretty recently, but the ongoing assault on grammar that is the Internet occasionally shakes my confidence. (Every time I want to type rein, rain, or reign, for example, I need to close my eyes and…
Source: LifeHacker – Figure Out Where to Put the Apostrophe With This Handy Flowchart