PsycARTICLES is the most recognized database of full-text peer-reviewed articles in the field of psychology published by the American Psychological Association and affiliated journals. It can be accessed off-campus with your Madison College login and password.
Keywords to use in search for human services materials: addiction; alcoholism; child care; counselors; drug abuse; homelessness; social services; social work. For the memoirs assignment, try combining the term memoirs with the topic you're interested in (e.g. homelessness).