It's pretty amazing what kinds of books you can find, exploring in the library. I found a really amazing book of charms in my third year.
I never really thought about time travel that way, I guess. The most I've ever thought about it has been wondering what would happen if someone went back in time and changed the past, like in books. It just never seemed that interesting to me, but I think it would be interesting to meet my parents when they were my age, or to meet a future son or daughter of mine. Just to ask what it's like to be a teenager in that era.
I'm planning to become a Healer, so I'm taking all the classes that are necessary for that career: Charms, Defense Against the Dark Arts, Herbology, Potions, and Transfiguration.