A Codex is a written code or set of rules. From the Latin caudex for "trunk of a tree" it refers to a block of wood or a book constructed of a number of sheets of paper made from wood. The WordPress Codex is an online reference book that contains the code/rules/information about WordPress.
The WordPress Codex
Located at the WordPress Dot Org website, the WordPress Codex comprises several hundred pages covering nearly everything to do with WordPress.
The WordPress Codex, while comprehensive, tends also to be very technical. Many non-programmer business users of WordPress find it to be daunting, confusing, overwhelming. Thus the WordPress Business Network. We look at WordPress from a decidedly business point of view and will help you translate the WordPress Codex from Geek to everyday English.