They will tell you in your first lecture, and depending on the book you can buy them from anywhere or the co-op bookshop, UTS has a lot of custom books which are only available at the co-op shop next to UTS.
Lecture slides are posted online either for the whole semester in advance, or the friday the week before the lecture. You dont need a laptop, you can print out the notes and hand write next to them, I haven't used a laptop throughout my whole first year and went by fine, most people dont have them, some do however, so it's really your choice. Laptops do distract people in lectures so keep that in mind.