I also often borrow cookbooks from the Library, often vegan ones I've seen mentioned favourably in forums, or ones I may want to buy. I like to take put non vegan books too, and get ideas and inspiration for creating dishes, flavour combinations, what have you. I love browsing bookstores too (and kitchen supply stores, and grocery stores but those are separate topics for love) and could spend hours, if I ever had spare hours to spend.
I'm going to mention in this post that I also love cookbooks that haven't been published yet, and being a tester for Isa's (the PPK) forthcoming Brunch book, and the Cookie one she is writing with Terry. I can recommend both already so if you love Breakfast (and who doesn't) - go and preorder!