tips

Session laws (laws as passed) vs. codes (integrated and arranged by subject-"snapshot" of law)

Annotated codes

Journal articles and other secondary sources

Indexes with subjects

Popular name tables

KeyCite

LexisNexis Academic for federal, but LexisNexis State Capital for state

"Bill tracking" for pending legislation-THOMAS for federal; state legislature websites or State Capital for states; research and advocacy group websites