OK, I'm going to try not to be down about Introduction to Literary Studies, because it does have some good aspects. Basically, it is about introducing students to ways of thinking about literature - kind of critical theory. It is taught by a compulsory lecture once a week, plus whatever your college adds - some do more than others. At Exeter, we had a few classes and some timed essays. The lectures are kind of dull and didn't seem to say much, but, once I found some theory topics I liked, I did enjoy the reading.
As for books per week - I tended to write on between 1 and 4 texts per week in first year for Victorians and Moderns. Old English is a little different - texts are shorter for a start, and there's set texts you have to cover. On top of that, you have to do secondary reading - critical texts, articles, reviews. Of that, you can do as much or as little as you like. Some tutors set critical reading and others don't.