Lisa's tips for not mis-using apostrophes: don't use contractions. Ever.
Well I thought it was good.
She also talked about 'active' and 'passive' voice, which (maybe I was asleep when we did it in high school) has never been explained to me. I liked the whole grammer talk, suprisingly, but I think it was because she had some reasoning behind the stupid rules. Active is more assertive and gives authority to what you're saying.
Also, we're allowed to use 'I' (at least in this class) but not 'I believe'. wtf? If you were going to say, 'I believe the sky is yellow,' then you would just say, 'The sky is yellow.' We're being assertive here people.