The study is a prospective, randomized, controlled trial studying adherence to positive airway pressure therapy in a population referred to the VA system for the treatment of sleep disordered breathing. The primary aim of the study is to determine if, compared to standard care provided at a VA Sleep Center, the deployment of a structured adherence management program and a web-based information program designed for participants beginning positive airway pressure therapy results in a greater portion of participants meeting Centers for Medicare & Medicaid Services (CMS) adherence requirements (use > 4 hours for >= 70% of days) at 90 days.