Estimated time: one minute (blog) Four minute video recap of chapters 1-12 (vlog) Chapters 13-19 Estimated time: 5 minutes (blog) Estimated time: 1 minute (blog) Estimated time: 5 minutes (quiz) Estimated time: 5 minutes (podcast) Estimated time: 4 minutes (blog) Estimated time: 17 minutes (vlog) Estimated time: 4 minutes (blog) Estimated time: 4 minutes (blog) Estimated time: 7 minutes (podcast) Estimated time: 5 minutes (quiz) Estimated time: 5 minutes (blog) Estimated time: 5 minutes (vlog) Estimated time: 4 minutes (blog) Estimated time: 5 minutes (quiz) Estimated time: 5 minutes (blog)