Form books aid in drafting legal documents of documents that need to be filed in court. State form books are available for most states. General form books include Am. Legal Forms, Am. Pleading and Practice Forms, West's Legal Forms, West's Federal Forms, Hyman's Basic Legal Forms, and others.
Legal encyclopedias are a good starting point to get an overview of a topic.
Also, many states have encyclopedias of state law. Begin with the index, try under different synonyms. The text will contain many footnotes leading to further sources. Texts and treatises can also yield useful general information. These contain the law on a specific subject, sometimes a specific jurisdiction, and often contain forms.