Both Lisa & Anders cover essentially the same material, but sometimes with slightly different approaches & in slightly different orders. If you are eager to move forward to a style course (Acoustic, Blues, Rock, Country), then go for it. If you have the time & interest you might want to go through some of Anders's Fundamentals courses to spend more time on the basics. Either way is fine.
Hope that helps!
Christopher Schlegel
Guitar Tricks Instructor
Christopher Schlegel Lesson Directory