Since the passage of California Assembly Bill 540 in 2001, authored by the late Assemblyman, Marco Antonio Firebaugh, more than 5,000 undocumented students in California have had improved financial access to higher education. AB 540 has become a pinnacle in the lives of students, who because of their immigration status, have historically been denied access to financial aid to fund their college education, despite demonstrated academic excellence. Even since the passage of AB 540 in 2001, many undocumented students remain unaware of the law as well as the rights and opportunities available to them in the United States. Through this resource guide the authors hope to inform not only those undocumented students who can benefit from AB 540 but also the counselors, teachers, and other advocates who support them. This guide is the result of a collaborative effort by individuals who work and advocate for students' post secondary access. It provides a comprehensive resource detailing the law, history of relevant legislation, immigration definitions and resources, important information about applying for college, tips on succeeding in college including funding their education, and providing the motivation and examples of students like them who have succeeded. The following are appended: (1) AB 540 Affidavit; (2) California's Four Systems of Higher Education; (3) AB 540 Student College Preparation Timeline; and (4) College Knowledge Glossary. (Contains 1 table and 12 footnotes.) [This resource guide was produced by the AB 540 College Access Network, a collaboration between the Center for Higher Education Policy Analysis (CHEPA) at the University of Southern California, the Salvadoran American Leadership and Educational Fund (SALEF), and Maria Lucia Chavez.]