Study Guide Zone This link opens in a new windowThis free site gives an overview of what to expect on a variety of licensing and other standardized tests, including the GRE, GMAT, NCLEX-RN and -PN, PRAXIS, and more. In addition, the site provides links to sample questions and answers for each of the tests. Although one link for Practice Questions for each of the tests takes you to a commercial site for a fee-based prep course, the other links provide free information and sample questions and answers.