Latino adolescents are at high risk for HIV/AIDS, other sexually transmitted infections (STIs), and unintended pregnancies. Puerto Rican adolescents, in particular, experience disparities in these areas, yet few adolescent and even fewer parent interventions have been developed to address these important issues with this underserved population. Parent-adolescent programs are an effective approach to reduce adolescent sexual risk behavior and associated negative consequences. A web-based parent communication intervention provides an opportunity to strengthen and enhance programs that are designed for adolescents by providing additional support for safer sex decisions, and to increase parents' access to sexual health education programs by decreasing barriers that keep them from participating in these interventions (e.g., low cost, can be viewed privately, at parents convenience, minimizes competing time with work and family). The purpose of this proposed study is to evaluate a brief theoretically informed (i.e., Ecodevelopmental Theory, Theory of Reasoned Action/Planned Behavior, Social Cognitive Theory 1-6), culturally appropriate, and linguistically tailored web-based parental communication program, Cuídalos ("Take care of them"), designed to improve parent-adolescent sexual communication and reduce adolescent sexual risk behavior. Recent findings from an NIH funded R21 randomized control trial (RCT) testing a brief computer-based version of the Cuídalos program indicated that the program increased parent-adolescent general communication and sexual risk communication with English and Spanish speaking U.S. Latinos. Further, despite limited or no previous computer use, parents reported they liked and learned from the program, and that it was easy to use and accessible.