If you can afford it, when you go to buy a media kit you can also purchase the Installation documentation set and User documentation set separately for about $60 to $80. For reasons you'll see below, you may want to forego buying the Installation documentation. However, the User documentation does a pretty thorough job of covering CDE. (If you do order the Installation documentation make sure you get the x86 version, not the Sparc version. The User documentation set covers both platforms.)