Participants in this study will be randomly assigned for a period of 9 weeks to one of three conditions: (1) the online CBT-i intervention optimized for older adults (SHUTi), (2) the online CBT-i intervention optimized for older adults (SHUTi) with additional adherence and technical support provided (stepped care), or (3) the patient education website. All participants will complete questionnaires and two weeks of daily sleep diaries about their symptoms at four time points - at the beginning of the study (baseline), immediately after completing the 9 week intervention (post), and at 6 and 12 months later.