Evaluate both the resources you used to find information and the information itself. Make sure you check out the web sites that deal with your topic as well as the web versions of traditional legal information, like cases, law, and regulations. Evaluate all web sites for accuracy, authority, and currency. Use the web, but be cautious. It is not always a reliable source of information.
Information comes in many forms.
If you find something that isn't in a law book, so much the better. Anyone can find something that's neatly packaged. It takes a research commando to track down sources that are out of the mainstream of legal publishing. As a general rule, this organizational structure works best, unless your topic is extremely narrow. This is hard to describe, but is a natural outgrowth of the research and organizational process.