Background: Sudden death due to cardiorespiratory arrest has a high mortality and in most cases occurs in out-of-hospital. Cardiopulmonary resuscitation (CPR) initiated immediately by witnesses doubles survival. However, rural areas present different challenges regarding the arrival of emergency services. As a result, the rural population could benefit from basic CPR training programs, in order to improve survival in front of a situation of cardiorespiratory arrest. The aim of this study is to evaluate the effectiveness of the online training in CPR-AED carried out by participants in a rural area of Camp de Tarragona. Methodology: Quasi-experimental design, consisting of 2 phases: Phase 1) Evaluation of the effectiveness of the online training in CPR-AED knowledge; Phase 2) Evaluation of the effectiveness of the online training in CPR-AED maneuvers in simulation at short- and medium- term. The main variable is the score difference between the pre- and post-training test (phase 1) and the passing or not (pass/fail) of the simulated test (phase 2). Continuous variables will be compared using the Student's t-test or the U-Man Whitney test (depending on normality). For categorical variables, Pearson's Chi-square test will be used. A multivariate analysis will be performed to determine which factors independently influence the main variable. Applicability and Relevance: The evaluation of the effectiveness of this course will allow it to be extended to different rural territories of the community, contributing to the expansion of knowledge of CPR-AED maneuvers.