Common law draws a distinction between primary and secondary sources of law.
Primary sources of law are legislation and case law. Secondary sources are just about everything else, for example:
Why do I need them?
It's pretty obvious really, now that you know what they are. They are great research aids and help you to understand the basics of legal topics. They are also fantastic at providing references to key legislation and leading cases on assignment topics.
Where are they?
Look through this guide to find out!