Write In My Book? No Way!
As a final note here, the idea of annotating a written text sometimes causes consternation among students. They say they plan to return their textbooks at the end of the semester for a refund. This is a foolhardy approach, a false economy of a most dangerous kind. It simply won't work for the serious college student who knows that texts are returned to throughout an education, not read and then discarded. Real encounters with written texts are a messy business. Further, you are building a library, and if that image doesn't appeal to you, think of it this way: you're being invited to deface a published document. Have fun, be a rebel, make it yours! Someday you can show your children the outrageous things you once wrote in the margins of your texts. And by that time you may well appreciate the library you began to build back there during your college days.