It's been a very long time since I played chess, but I'll never forget learning. I was in high school and my father taught me at home. He had never mentioned it before, but one day he simply decided to reveal the rules to me. I had never seen him play it, and in the end he wasn't very good, but I figured there was a reason he suddenly decided it would be good for me to know the rules too. And that was the point - knowing the rules, not winning a particular game. Practice would take care of the rest.