There is some discoloration and wear due to age, but I think it's in a condition that allows for reading without any problems. Please judge the condition from the images. The following is from amazon.co.jp: Machintosh Kaizo-do 2001 Enlarged Edition: The Ultimate Tune-up Guide (ASCII Mook) Thorough analysis of 36 models and 113 PowerPC-equipped machines. Completely covers everything from the Performa series to the latest models, including logic explanations and specification tables for all models.