Although the Internet can be a fantastic tool, it isn't necessarily your best friend when it comes to research. Why? Because anyone can post anything on the Internet, and it can be very hard to tell what is trustworthy and what is not. That's where books come in! Books are edited and fact checked extensively before being published, meaning that you can rely on the information. Doing book research does take slightly more time than an Internet search, but in the end it saves you time and frustration because the information is more organized, more reliable, written by an authority on the subject, and put into an appropriate context.
Two parts of books will be particularly useful for research: