 The primary purpose of this study is to address the training and support requirements of parents of preschool children newly diagnosed with ASD, by developing and evaluating the effectiveness of a self-directed on-line ASD parent training and support program. The secondary purpose is to assess the interactional effects, of a self-directed on-line ASD parent training and support program, and parent stress, on parent and child outcomes. It is predicted that if parents receive on-line training and support they will increase their parenting knowledge and skills, reduce their levels of stress, and create better engagement and communication outcomes for their child, in comparison to parents who do not receive the training and support. 