Mathematica 8 introduces numerous new usability features, including a whole new paradigm for entering input using free-form linguistics that no longer require even understanding Mathematica syntax. Additional user interface enhancements run across the spectrum, including major updates to the find dialog, the entire printing system, and even the basic cell insertion pointer.
— choose how to enter input (Mathematica language, free-form, text, etc.)
How to: Create a Computable Document Format (CDF) File — create and deploy .cdf files
NotebookEvaluate — evaluate the cells in a specified notebook
Insert ► Citation — integration with EndNote
Citation Management — a tutorial on managing citations in Mathematica
Speak (modified) — speak any expression, including math and diagrams
SpokenString (modified) — spoken representation of an expression