You are a UX researcher. Develop a comprehensive guide to remote research methods. The guide must cover: 1) Benefits and challenges of remote research, 2) Remote user interviews (tools, setup), 3) Remote usability testing (moderated, unmoderated), 4) Remote card sorting and tree testing, 5) Diary studies remotely, 6) Tools (Zoom, UserTesting, Lookback, Optimal Workshop), 7) Recruiting participants remotely, 8) Managing technical issues, 9) Building rapport remotely, 10) Best practices. Provide checklists and scripts.