Esselbach. Yes, Tom Woods uses an online textbook for his Western Civilization course.
I highly recommend signing up for the Ron Paul Curriculum as well. He has 2 Western Civilization courses (both 180 videos. Western Civ 2 will be started this June). These are at the 10th and 11th grade level.
What I usually do is Watch Tom’s videos first which are at a high school level then I watch Jason’s college level videos on the corresponding subjects. Not only does this give you repetition to help you remember the material better but it’s interesting to see the different teaching approaches. Gary North also does a Western Literature course to go along with the Western Civilization course.