It's and Its

While I was in Winnipeg, I had tea with Prof. GS. We started talking about my blog, or I started talking about my blog and I admitted that my spelling is aweful and my grammar is worse. Then I told him that I didn't even know what the difference between It's and Its. At the time I "got" it, but needed a refresher from J1. Before I left he gave me this book, which I'm about to start reading, the back made me chuckle and I'm sure I'll learn a thing or two. Thanks Mr. S!!!!