Jeremy Silman's Complete Guide To Chess Openings

Interesting for being early programs with large amounts of content for learning chess, both this game and also Paul Whitehead Teaches Chess (1985) contain the program "Coffehouse Chess Monster" as an add-on. An extensive tutorial giving a complete system of chess openings including King's Indian Defense, and Najdorf Sicilian Defense. Each tutorial, and there are 4 of them, contains more than 60 hours of instructional material.