"American Jurisprudence, 2nd Edition, is an encyclopedic text of both procedural and substantive American law, state, federal, criminal, civil and procedural. Consisting of over 430 topic headings (titles), Am Jur 2d articles collect, examine, and summarize the broad principles of American law and, at the same time, provide direct leads to supporting cases, related annotations, forms, proofs, and trial techniques."
Start with legal encyclopedias for explanations about general principles of law and appropriate references to statutes and cases:
"A free, informative seven-page online guide to help non-lawyers find legal rules that can resolve or prevent conflict. Avoiding jargon throughout, the booklet covers the basic steps in legal research. It also describes basic sources of legal information, giving examples of legal encyclopedias, treatises, articles, codes, reporters, and digests."
"meant to help public librarians understand the process of legal research, effectively develop and use the information located within their libraries, utilize information located outside their libraries, with the end goal of helping the patron locate the legal information they need."