I wrote an entire blog about the grammatical pet peeves I encountered in the stories I read as a first round judge of the Writers' Union fiction contest. I did a little research and some background checks for it but I LOST IT - punched the wrong button, spent half an hour trying to retrieve it. Nada. Serves me right. I was being a curmudgeon and a nitpicker.
If you're interested, check out oblivious, bored, may and might, but forget lie/lay. (I have - it's hopeless.) Look up Strunk & White. Leave it at that.