I always look online now. It is convenient and easy to be able to get all of your answers from online sources these days and if you are not sure if you have an emergency or not it is a great way to find out information before heading to the vets something minor.
I do miss reading pet books and magazines though and occasionally I will buy a magazine to read, but not very often.
I used to buy books all of the time when I was little and if I got a new pet (hamster, rabbit etc) along with all of the necessary items for my pet I would also buy the 'My First Pet' range of mini books that were excellent to learn and read as a child