The BBC's 1964 series "The Great War" is a much better introduction to the war. The main claims to fame of this production are that it contains original color footage ("The Great War" is all black and white), and that it focuses a lot on underrepresented aspects of the conflict, such as the war in Africa. However, this latter point is of little interest to a newcomer looking for a basic introduction, and it makes the overall flow of the story hard to follow. Another point in this series is to film the original locations as they are today - which ends up meaning a lot of guys with weird haircuts and designer jeans sipping lattes, and this is actually detrimental to setting the historic tone.
The maps are not very good and the coverage of major battles and sequences of battles is rushed and missing important facts.
I do give some stars for the color footage, which is fascinating.